WO2016079558A1 - Cellule d'essai et procédé d'essai d'une composition durcissable - Google Patents

Cellule d'essai et procédé d'essai d'une composition durcissable Download PDF

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Publication number
WO2016079558A1
WO2016079558A1 PCT/IB2014/002732 IB2014002732W WO2016079558A1 WO 2016079558 A1 WO2016079558 A1 WO 2016079558A1 IB 2014002732 W IB2014002732 W IB 2014002732W WO 2016079558 A1 WO2016079558 A1 WO 2016079558A1
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WO
WIPO (PCT)
Prior art keywords
fixing means
test cell
sample
screen
curable composition
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/IB2014/002732
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English (en)
Inventor
André Garnier
Hafidha DADOUCHE
Nicolas Cruz
Cyrille RAMOS
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TotalEnergies SE
Original Assignee
Total SE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Total SE filed Critical Total SE
Priority to PCT/IB2014/002732 priority Critical patent/WO2016079558A1/fr
Publication of WO2016079558A1 publication Critical patent/WO2016079558A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/38—Concrete; Lime; Mortar; Gypsum; Bricks; Ceramics; Glass
    • G01N33/383—Concrete or cement

Definitions

  • the present invention relates to a test cell for testing a curable composition in which the integrity of a sample, obtained by curing of the curable composition under pressure and temperature, is tested.
  • the invention also relates to a method for testing a curable composition performed by means of such a test cell, the method notably aims at testing the integrity of a sample subjected to at least a load and/or a thermal and/or mechanical discharge and/or charge.
  • the invention applies in particular to the curable compositions used in the field of oil production, and particularly to the compositions of cement for the cementing of the casings.
  • TECHNICAL BACKGROUND Cementing a casing in an oil well consists in placing a cement sheath in the annular space between the casing and the formation (i.e. the whole of the layers or portions of the ground which forms the subsoil) or between two casings.
  • This cement sheath has a central role in the stability and the insulation of the oil wells.
  • the cement sheath is obtained by pumping cement slurry made from cement, water and additives. This cement slurry is under the liquid state during mixing, pumping phases and before setting. The hydration of the cement grains leads the liquid slurry towards a solid state.
  • the cement sheath is exposed to various mechanical and thermal stresses, also called conditions of the well, during the life of the well. These stresses can come from operations conducted in the well (tests under pressure, mud change, cold and hot stimulations, production of the reserves, steam injection as SAGD for Steam Assisted Gravity Drainage) or from phenomena occurring directly in the subsoil (compaction of the reservoir, tectonic movements.) and this until after its plugging and abandonment. These stresses can damage the cement sheath, modify its mechanical and hydraulic properties and, consequently, change its contribution to the well integrity.
  • Steam injection refers to steam generation generally done at the surface using a dedicated plant or different types of generators.
  • the steam is then conveyed into the reservoir using a pipe partially located on the surface.
  • the cement sheath aims to maintain the casing in position and to prevent the communication between the various layers of the formation drilled across and also with the surface. With this intention, the cement sheath must bond to the casing and to the formation. Indeed, in the event of loss of cement integrity, a preferential way is generated allowing leakage all along the cement column.
  • This invention is related to a test cell for testing a curable composition, comprising:
  • said mould comprises:
  • the external rigid screen is formed of at least one screen element fixed by fixing means so that the external rigid screen is cylindrical-shaped, wherein the fixing means are adapted to pass from a fixed state to an unfixed state when subjected to a stimulus, - means for compressing the sample by pressure of a fluid in the confining system around the mould.
  • the external rigid screen defines a cylinder extending along a longitudinal axis when fixed by the fixing means, the fixing means being configured to prevent the external rigid screen to expand transversally to the longitudinal axis during curing of the curable composition.
  • At least one screen element extends along a helical line when fixed by the fixing means.
  • the external rigid screen is formed by at least two screen elements each defining an angular sector of a cylinder.
  • the fixing means are subjected to the stimulus when a parameter reaches a predefined threshold or predefined range, the parameter being for example a temperature.
  • the fixing means are adapted to pass from the fixing state to the unfixed state when subjected to an injection of a fluid within the confining system, for example vapor.
  • the fixing means are subjected to the stimulus when the fixing means are put in contact with a stimulus fluid, for example oil.
  • the fixing means comprise a hot melt adhesive.
  • the test cell comprises a moulding core inside the mould, preferably formed by a casing portion of a drilling well.
  • test cell comprises at least one among:
  • the invention is further related to a method for testing a curable composition, comprising the steps consisting in:
  • the sample and/or moulding core temperature is controlled.
  • the pressure within the confining system is controlled by injecting a fluid inside the moulding core and/or by exerting a constraint on the sample and/or by injecting a confining fluid inside the confining system, around the mould.
  • the method further comprises the step of:
  • the step of providing a stimulus to the fixing means comprises the step of:
  • Figure 1 schematically shows a test cell.
  • Figure 2 schematically shows a rigid external screen of the test cell of figure 1, in a perspective view.
  • Figure 3 schematically shows a rigid external screen of the test cell of figure 1, in a top view.
  • Figure 4 schematically shows an isolated view of the rigid external screen of figures 2 and 3.
  • Figure 5 schematically shows an embodiment of fixing means of the rigid external screen.
  • Figure 6 schematically shows another embodiment of the rigid external screen.
  • a curable composition means, in the scope of the invention, a fluid composition (e.g. liquid, pasty or granular) likely to pass to a solid state or almost solid in the course of time (by undergoing a step of curing).
  • a fluid composition e.g. liquid, pasty or granular
  • the curable composition may thus be a composition of gel, resin, mud or preferably a hydraulic binder composition and water (with possibly other compounds, such as for example flexible particles, in mixture) and more particularly a slurry (composition containing cement and water).
  • curing primarily corresponds in this case to hydrating (or curing) of the curable composition under field parameters (temperature and pressure).
  • screen means an openwork rigid structure. It can also be a sheet with perforations or an alveolar structure.
  • the sheet may have a thickness of 1 mm or at least 1 mm.
  • the sheet may be made in steel, notably in E24-2/XC18.
  • rigid in the scope of the invention, refers to an element which is not likely to become distorted (or which is not likely to become substantially distorted) under the conditions (in particular of pressure) met.
  • flexible in the scope of the invention, refers to a non-rigid element, which can become distorted relative to the constraints which are applied to it.
  • the test cell for testing 10 a curable composition comprises a wall 11 of a tubular type (which delimits a hollow body) as well as a lower base 12 and an upper base 13 at two ends of the wall 11.
  • the lower 12 and upper 13 bases may be screwed on the wall 1 1, as illustrated on figure 1 by holes 111, 112, 113, 114, 121, 122, 131, 132 facing each other.
  • the wall 11 and the lower 12 and upper 13 bases form a closed confining system adapted to allow pressurizing the inside of the test cell 10.
  • the wall 1 1 presents a longitudinal axis A, the lower base 12 and the upper base 13 being located at the respective ends of the wall 11 along the axis A.
  • the wall 1 1 is of a cylindrical geometry, and the longitudinal axis corresponds to the axis of the cylinder.
  • This geometry is a traditional geometry for the cement sheaths of the well casings. This makes it possible to get results from tests of integrity of the samples of cement sheaths representative of the sheaths really implemented in the wells. It is however possible to consider other geometries for the wall 11, for example truncated-cone shaped.
  • the wall 11 may be a metal wall, and in particular a stainless steel wall.
  • a mould 14 is disposed inside the confining system, which is adapted to receive a sample 15 of curable composition to test.
  • the mould 14, represented more in detail on figure 2, comprises an internal flexible jacket 16 and a rigid external screen 17, adapted to be pressed against the flexible internal jacket 16 in a removable way.
  • the rigid external screen 17 is cylindrical and the flexible internal jacket 16 is put in contact with and inside the rigid external screen 17 so that the flexible internal jacket 16 can ensure sealing between cement and oil.
  • a part of the flexible internal jacket 16 may be glued on the rigid external screen 17.
  • the flexible internal jacket 16 is preferably made of polymeric plastic, preferably heat-stable.
  • Polytetrafluoroethylene further known under the trademark Teflon®
  • Teflon® is preferred for its compatibility with cement and oil. This material avoids thus the slurry to flow through the rigid external screen and allows making a cement sheath with the same thickness from top to bottom. This material is flexible so as to transmit the confining pressure to the sample 15.
  • the rigid external screen 17 comprises a first and a second screen elements 171 and 172 that correspond to two angular sectors of a cylinder assembled together.
  • the rigid external screen 17 is formed of two half-shells assembled together so that the rigid external screen 17 is cylindrical- shaped.
  • the external rigid screen 17 defines, when the screen elements are fixed together, a cylinder extending along a longitudinal axis B (merged with the longitudinal axis A when the rigid external screen 17 is disposed within the confining system).
  • the first and second screen elements 171 and 172 are assembled in a butt joint manner, i.e. that each screen element 171 and 172 has an edge 30 that faces an edge 30 of the other screen element.
  • the mould 14 further comprises fixing means 32 provided at each edge 30 of the first and second screen elements 171 and 172 for fixing the first and second screen elements 171 and 172 together.
  • the fixing means 32 are adapted to pass from a fixed state to an unfixed state when subjected to a stimulus.
  • the fixing means 32 make it possible, during a first step, to keep the screen elements 171 and 172 fixed together so that the rigid external screen 17 can prevent expanding of the sample 15 transversally to the longitudinal axis B. In that way, the first and second screen element 171 and 172 are integral with each other during this first step.
  • the fixing means 32 are able, when stimulated by an occurrence, to unfix the connection between the first and the second screen elements 171 and 172 so that the rigid external screen 17 does no longer exert a constraint on the sample 15.
  • the fixing means 32 allow the test cell 10 to first maintain the sample 15 in a rigid envelope allowing the curable composition to set under pressure and temperature and secondly to release the sample 15 from mechanical constraint involved by the contact of the rigid external screen 17 while maintaining the confining pressure.
  • the fixing means 32 comprise an adhesive fluid allowing the fixing means 32 to perform these latter first and second steps.
  • the stimulus enabling the fixing means 32 to pass from a fixed state to an unfixed state may be generated by reaching a temperature or pressure predefined threshold inside the confining system.
  • the temperature (hot-melt adhesives) or the pressure may be increased or decreased so as to reach a predefined threshold.
  • An appropriate stimulus may be generated by injecting hot vapor inside the confining system so as to reach a predefined temperature threshold.
  • the unfixed state (corresponding to a softening state of the hot-melt adhesive) may be obtained either by reaching a minimum predefined temperature threshold or by reaching and maintaining the temperature in a predefined temperature range.
  • the predefined threshold may be set from 60°C to 120°C, preferably from 75° to 95°C.
  • softening state is obtained by increasing the temperature until at least a temperature from 60°C to 120°C, preferably from 75°C to 95°C.
  • a suitable hot-melt adhesive for the fixing means 32 is the adhesive referenced as "TH 720" commercialized by BOSTIK®, having a softening temperature of approximately
  • TH 720 commercialized by BOSTIK®
  • the range may be set for instance from 70°C to 100°C (as an example, suitable hot-melt adhesives have a predefined temperature range set from 82°C to 87°C, from 72°C to 86°C or from 80°C to 96°C).
  • softening state is obtained by reaching and maintaining the temperature inside the predefined temperature range.
  • the stimulus may be generated by putting in contact the fixing means 32 with a stimulus fluid, such as oil.
  • the fixing means may comprise an adhesive able to swell when contacting oil. By swelling, the adhesive allows the screen elements to be separated from each other. This adhesive able to swell when contacting oil may be chosen among the hot-melt adhesives. Particularly, the hot-melt adhesive may be chosen by successively performing a first and a second test methods.
  • the first test method consists in submerging a hot-melt adhesive sample into oil at constant pressure and temperature. At regular intervals, the hot-melt adhesive sample is visually controlled to determine if the hot-melt adhesive sample suitably reacts to oil contact. Oil suitable for this first test method is for example the oil referenced as "EDC 95" or “EDC 99" commercialized by TOTAL®.
  • the second test method consists in using hot-melt adhesive having successfully passed the visual control of the first test method to fix the screen elements together.
  • the rigid external screen 17 fixed with the tested hot-melt adhesive is then installed in the test cell 10 for curing a sample of a curable composition under predetermined temperature and pressure curing conditions, for example from 25°C to 50°C and from 5 bars to 25 bars.
  • the tested hot-melt adhesive is identified as suitable for fixing the screen elements if the tested hot-melt is able to maintain the rigid external screen 17 closed during 6 hours under the predetermined temperature and pressure curing conditions. Opening of the rigid external screen may be determined by acoustic sensors provided within the test cell 10.
  • an embodiment of the fixing means 32 comprises a first fixing element 321 intended to be disposed at an edge 30 of a first screen element and a second fixing element 322 intended to be disposed at an edge 30 of a second screen element to be fixed with the first screen element.
  • the first fixing element 321 comprises a plurality of protrusions 324 intended to be placed inside holes 326 of the second fixing element 322.
  • the protrusions 324 comprise inlets 328 enabling the adhesive fluid to be put within the first fixing element 321 so as to perform a fixed connection between the first and second fixing elements 321 and 322.
  • the protrusions 324 further comprise outlets 330 for enabling air bubbles to escape from the inside of the protrusion 324.
  • first and second fixing elements 321 and 322 comprise screwing holes 332, among which a clearing hole respectively facing a screwed hole to perform a screwed connection between the first and second fixing elements 321 and 322.
  • the fixing means 32 may comprise hot- melt adhesive (or adhesive able to pass to the unfixed state by contacting a stimulus fluid) in the form a yarn so that the screen elements may be stitched together or in the form of a hook and loop fastener.
  • the cell 10 also comprises, radially inside the mould 14, a moulding core 18.
  • the moulding core 18 is cylindrical here.
  • the moulding core 18 is made of a metal casing portion, to simulate the behavior of a production well or a steam injector well.
  • the inside of the moulding core 18 may be filled with a fluid (for example with oil), to exert mechanical and/or thermal constraints on the casing so as to put stresses on the sample 15 to be tested. Filling the inside of the moulding core 18 with oil may be controlled by means of supplying and draining central openings 19 drilled through a base, in this case in the lower base 12.
  • the annular space 29 between the mould 14 and the wall 11 may be further filled outside of the moulding core
  • Heating oil in the moulding core 18 also makes it possible to heat the moulding core 18 which can thus expand and exert a mechanical constraint on the sample to be tested.
  • the gap 29 between the flexible internal jacket 16 and wall 11 may also be filled with oil for confining the sample 15 to be tested. Filling the gap 29 may be performed by means of supplying and draining peripheral openings 27 drilled through a base. It should be noted here that, because of presence of the flexible internal jacket 16, there is no direct contact between oil and the sample 15 to be tested during the cement setting phase.
  • centering the moulding core 18 may be ensured by means of a centering head 20 fastened to one of the bases.
  • the centering head 20 is formed in the other base that in which agitating means 22 are provided.
  • a heating collar 23 may also be disposed around the wall 1 1, to heat the sample to be tested.
  • the heating collar can be in several parts (for example top, middle, bottom on a vertical axis), each one being temperature regulated.
  • the lower base 12 is mounted on feet 24.
  • a lifting ring 25 may also be fixed on the upper base 13, to lift the test cell during installation or removal of the upper base 13.
  • test cell 10 may be provided with various sensors (not represented), such as acoustic, displacement, pressure, resistivity and/or temperature sensors depending on the test to be performed on the sample 15 to be tested and/or of measurements to be carried out on this sample 15.
  • the test cell may in particular comprise acoustic sensors to detect a rupture of the sample to be tested. These acoustic sensors may in addition or alternatively determine the location of this rupture, in particular by triangulation.
  • Test cell 10 may be performed in the following way to test the integrity of a sample of a curable composition to be tested.
  • the external rigid screen 17 is fixed by setting the fixing means 32 in the fixed state.
  • a curable composition is then poured in the mould 14 of the test cell 10.
  • a cement sample is used as the curable composition to describe the test cell operation.
  • the curable composition is then cured to a sample 15, inside the mould 14.
  • Curing of the curable composition is made at predetermined parameters, such as pressure and temperature.
  • Water can be injected on top of the curable composition in the mould 14 to apply pressure in order to simulate field conditions. This latter step of injecting water is optional, and testing the sample may be performed before the curable composition has cured. Testing the sample may also be performed before the curable composition has totally cured, i.e. once the curable composition has reached its a plateau or a stable steady state for its mechanical properties.
  • a test pressure may also be applied, for simulating the real conditions, notably the maximum pressure, which can be exerted in the annular space between the casing and the formation, after the step of installation of the sample to be tested.
  • This test pressure may be controlled by injecting a fluid inside the moulding core 18 and/or by a constraint exerted on the sample 15 to be tested along the longitudinal axis A of the test cell 10 and/or by injecting a confining fluid within the space of the confining system surrounding the mould 14.
  • a constraint may be exerted on the sample 15 to be tested along the longitudinal axis A by injecting a fluid such as water by the supplying opening 26 in the mould 14.
  • the pressure within the confining system may reach 200 bars, and the temperature within the confining system may reach 250°C. Temperature could be increased up to 250°C due to simulated steam injection but confining pressure could be only several tenths of bars (for instance, 10, bar, preferably 15 bars). These conditions correspond to the real downhole conditions in a well under SAGD conditions. It should be noted that the screen 17 of the test cell 10 is sufficiently rigid to form a uniform cement sheath while allowing the application of a confining pressure over the entire length of sample 15 during the setting of the cement sample and during the testing of this sample.
  • a stimulus may be generated before performing the testing step. Indeed, before performing the integrity test, generating a stimulus enables the fixing means 32 to pass from a fixed state to an unfixed state so that the rigid external screen 17 no longer exert constraints on the sample 15. Therefore, generating a stimulus before performing tests enables improving test results by simulating the real field conditions.
  • Generating a stimulus can be for example carried out by heating the sample 15 and the moulding core 18 (in particular when the moulding core 18 consists in a piece of casing), thanks to the collar heating 23 and/or with heating resistance 21. Particularly, in SAGD applications, only heating resistance 21 is used for generating a stimulus. This heating is preferably carried out under adiabatic conditions. This heating can be simultaneous or posterior to the step of curing. Particularly, a posterior heating enables to simulate the steam injection in a casing, after the cement sheath has cured.
  • the sample can be subjected to various loads and/or mechanical and/or thermal discharges, these loads being continuous, cyclic and increasing.
  • the thermal loads may be performed by means of the heating resistance 21 and/or of the heating collar 23. Oil injection inside the moulding core 18, heating this oil, which induces an expansion of the moulding core 18, oil injection in the space between the wall 11 and the screen 17, heating of this oil by means of the heating collar allow to simulate the curable composition sample with the anticipated field conditions.
  • Acoustic sensors may allow detecting the appearance and the location of a rupture of the sample 15 when subjected to the mechanical and/or thermal loads and/or discharges. It is also possible to detect the dismantling of the external rigid screen 17.
  • the method described previously may be implemented for any curable composition.
  • This method notably applies to the curable compositions selected among the compositions of gel, resins, muds and hydraulic binders, and preferably the compositions comprising water and a hydraulic binder, more preferably the compositions comprising water and cement.
  • the test cell according to the invention allows to manufacture a cement sheath under downhole conditions and to stress it so as to validate its integrity under these mechanical conditions simulating the conditions met in the drilling wells.
  • the rigid external screen 17 may be made of more or less than two screen elements, e.g. one, three, four, five, six or more screen elements.
  • the screen elements may be triangular-shaped or formed in any shape.
  • the edge 30 of the screen elements may extend in a non-linear manner, i.e. that the edge 30 does not linearly extend when the screen element is flattened.
  • the edge 30 may extend along a curve, e.g. along a sinusoid or any curved line.
  • the edge 30 may extend in a direction transversal or inclined relative to the longitudinal axis B (e.g. helical line around longitudinal axis B). Moreover, the edge 30 may extend partially along the longitudinal axis B and partially along a direction transversal or inclined relative to the longitudinal axis B.
  • the rigid external screen 17 is formed by one single screen element 173, extending along a helical line when fixed by the fixing means 32.
  • the one single screen element 173 is a single strip coiled around itself to form a cylinder.
  • the single screen element 173 comprises two edges 30 at each side of the strip, joined together over the whole length of the edges 30.
  • the rigid external screen 17 may be fixed to form a cylinder in a similar way as the embodiment of figures 2 to 5, i.e. comprising fixing means 32 enabling fixing of the edges 30 together.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Food Science & Technology (AREA)
  • Ceramic Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

La présente invention concerne une cellule d'essai (10) pour tester une composition durcissable, comprenant : un système de confinement d'essai ; un moule (14) agencé dans le système de confinement d'essai et configuré pour recevoir un échantillon (15) d'une composition durcissable, ledit moule (14) comprend : une enveloppe flexible interne (16) et un écran rigide externe (17) adapté pour être pressé de façon externe contre l'enveloppe flexible interne (16) d'une façon amovible, où l'écran rigide externe (17) est formé d'au moins un élément d'écran fixé par des moyens de fixation de sorte que l'écran rigide externe (17) soit de forme cylindrique, où les moyens de fixation sont adaptés pour passer d'un état fixe à un état non fixe lorsqu'ils sont soumis à un stimulus, des moyens pour comprimer l'échantillon (15) par pression d'un fluide dans le système de confinement autour du moule.
PCT/IB2014/002732 2014-11-21 2014-11-21 Cellule d'essai et procédé d'essai d'une composition durcissable Ceased WO2016079558A1 (fr)

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PCT/IB2014/002732 WO2016079558A1 (fr) 2014-11-21 2014-11-21 Cellule d'essai et procédé d'essai d'une composition durcissable

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2497709B (en) * 2010-10-12 2018-08-22 Total Sa Measurements of properties of sample of curing compositions under high pressure
US11092588B2 (en) * 2016-12-23 2021-08-17 Curis International Measurement cell and associated measurement method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0760130B2 (ja) * 1992-03-24 1995-06-28 建設基礎エンジニアリング株式会社 吹付け硬化材の試験方法
FR2981453A1 (fr) * 2011-10-13 2013-04-19 Total Sa Cellule et procede de test d'une composition durcissante
US20130192382A1 (en) * 2010-10-12 2013-08-01 Total S.A. Measurement of properties of sample of curing compositions under high pressure

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0760130B2 (ja) * 1992-03-24 1995-06-28 建設基礎エンジニアリング株式会社 吹付け硬化材の試験方法
US20130192382A1 (en) * 2010-10-12 2013-08-01 Total S.A. Measurement of properties of sample of curing compositions under high pressure
FR2981453A1 (fr) * 2011-10-13 2013-04-19 Total Sa Cellule et procede de test d'une composition durcissante

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
A. GAMIER: "A singular methodology to design cement sheath exposed to steam stimulation", SPE/PS/CHOA INTERNATIONAL THERMAL OPERATIONS AND HEAVY OIL SYMPOSIUM, 2008
DATABASE WPI Week 199530, Derwent World Patents Index; AN 1995-229485, XP002742602 *
R. PATIL: "Designing and testing cement system for SAGD application", SOCIETY OF PETROLEUM ENGINEERS, 2010

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2497709B (en) * 2010-10-12 2018-08-22 Total Sa Measurements of properties of sample of curing compositions under high pressure
US11092588B2 (en) * 2016-12-23 2021-08-17 Curis International Measurement cell and associated measurement method

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