JPH0458556B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention This invention relates to the transport of dissimilar fluids on the ocean floor and in wells.

"Conventional Technology" For example, in oil, geothermal and metal exploration, drilling wells are drilled.

However, since the wells are deep, at least 500 to 5,000 meters, mud can be lost during drilling.

When this happens, the circulating mud for drilling in the borehole escapes into the ground from the hole wall, making it impossible to maintain the head of the mud and causing the hole wall to collapse.

Therefore, a chemical solution having the effect of filling the gap between the sludge and the sludge is supplied to the sludge-sludge area.

Conventionally, as this supply means, pipe transportation has been used in which the chemical liquid is transported following the preceding muddy water, resulting in a so-called multiphase fluid.

``Problems to be Solved by the Invention'' However, there are circumstances in which anti-sludge chemical solutions made of polymeric substances, etc., which are completely different from boring mud, are unsuitable for pipe transportation, which is generally used for fluid transportation.

In other words, the anti-sludge chemical solution and the boring muddy water differ in specific gravity, viscosity, surface tension, etc., so for example, in the case of a chemical solution that does not spread, when descending through the muddy water, the chemical solution does not mix with the boring muddy water and becomes a cohesive fluid mass. It forms folds at the rear in the pipe without any problems, and as it descends while vibrating the folds, the flow mass breaks off at the rear part of the folds and later forms small lumps that float into the pipe.

For this reason, the surface area in contact with water increases, making it unsuitable for chemical solutions that are inconvenient to come into contact with muddy water during transportation.

In this case, it is difficult to plan for transporting and supplying the flow to the evacuated position in a state where the flow is as organized as possible without causing waste.

``Means for Solving the Problems'' and ``Operations'' The present invention was made in view of the above circumstances, and its gist is to provide a flexible tube made of a water barrier sheet material with a push-up valve on the bottom plate. A different type of fluid, such as a chemical solution to prevent sludge, is sealed in the body, and this is poured into the filled fluid, and the above-mentioned push-up valve is operated at a predetermined lowering position to dissipate the sealed liquid. The point is that it is possible to supply the product in the form of lumps without wasting a single drop.

"Example" Hereinafter, this will be described in detail based on example diagrams.

FIGS. 1a and 1b are an overall view and a detailed view of the main parts of the transportation device of the present invention.

In the figure, reference numeral 1 denotes a flexible cylindrical body made of a water barrier sheet material that serves as a container for enclosing a chemical solution 2 to prevent sludge, and the shape of the cylindrical body is maintained by upper and lower reinforcing lids 3 and 4.

Reference numeral 5 denotes a chute pipe extending vertically between the centers of the upper and lower reinforcing plug lids 3 and 4, and 6 is a screw-up type valve disposed on the lower reinforcing plug lid 4, the details of which are shown in Figure b. shown.

That is, an O-ring 9 for sealing is interposed between a shaft body 8 having a flange part 8a as a valve at the top end of the standpipe part 7 having a flange part 7a as a valve seat at the upper end formed on the stopper lid 4. On the other hand, a screw 11 with a biased weight on the lower end abutting side of the shaft 8, that is, the side of the action point, is fixed to a bracket 10 protruding from the bottom surface of the stopper lid 4. The power point side is located directly below the opening of the chute tube 5.

Therefore, the weight 1 disposed inside the shute pipe 5
3 falls and collides with the force point of the lever 11, causing the valve 6 to close.

In the figure, reference numeral 14 indicates a stopper for restricting the rotation of the screw 11.

The weight 13 is suspended by a hanging string 15 at a position where a predetermined fall distance is secured.

16 is a wire line for hanging the flexible cylinder 1, 17 is a cutting table fixed to the wire line 16, 18 is a knife edge protruding from the cutting table 17, and the hanging string 15 is passed over the knife edge 18. After that, it is fixed 19 to the side surface of the cutting table 17.

20 is cylindrical and has a wire line 16 in the center.
As it falls from the borehole mouth along the wire line 16, it collides with the knife edge 18 and suspends the hanging string 1.
5 is cut and the weight 13 is dropped.

In the figure, 21 is an assembly band, and 22 is a sled for guiding downward into the hole, which may be attached.

According to the present invention having the configuration described above, by suspending the flexible cylindrical body 1 by the wire line 16 and guiding it to the bottom of the borehole, it is possible to transport the sludge prevention chemical solution in the form of a lump to the sludge sludge location. .

At this time, even in locations where the vertical accuracy of the borehole is poor, it can be passed through the borehole without any problem because it is flexible.

It is confirmed that the flexible cylinder 1 has reached the bottom of the hole by measuring the tension of the wire line 16.

Next, wire line 1 from the borehole mouth
Drop the Metsusenjar 20 assembled to 6.

Upon reaching the falling point, the messenger gear 20 cuts the hanging string 15, drops the weight 13, and closes the valve 6.
The valve is opened and the sealed sludge prevention chemical solution 2 is dispersed to the sludge-sludge area.

Therefore, according to the present invention having the above configuration, it is possible to transport the sludge prevention chemical solution to the sludge sludge location in the form of a lump.

"Effects of the Invention" As described above, according to the present invention, it is possible to reliably transport and supply the sludge prevention chemical solution in the form of a lump to the sludge sludge area.

[Brief explanation of the drawing]

Figures 1a and 1b are an overall view of the device of the present invention and a detailed view of the screw-up type valve, which is the main part. DESCRIPTION OF SYMBOLS 1... Flexible cylinder body, 2... Sludge prevention chemical solution, 3... Upper stopper lid, 4... Lower stopper lid, 5... Shute pipe, 6... Valve, 7... Standpipe section, 7a... Flange part, 8... Shaft body, 8a... Flange part, 9... O-ring, 10... Bracket, 11... Screw, 12
... shaft stop, 13 ... weight, 14 ... rotation regulating stopper, 15 ... suspension string, 16 ... wire line, 17 ... cutting table, 18 ... knife edge, 19 ... fastening, 20 ... Methsenjaer, 2
1...Band for assembly, 22...Sled for descending guide.

Claims (1)

[Scope of Claims] 1. A flexible cylindrical body made of a water barrier sheet material with a push-up valve provided on the bottom plate is filled with a different type of fluid such as a chemical solution for preventing sludge, and this is poured into the filled fluid, and at a predetermined lowering position. A method for transporting dissimilar fluids on the seabed or in a well, the method comprising the step of activating the push-up valve to diffuse the sealed liquid. 2 A chute pipe is installed vertically between the centers of the upper and lower reinforcing caps of a flexible cylindrical body made of a water barrier sheet material as a container for containing a different type of fluid such as a chemical solution to prevent spillage, and the lower reinforcing cap is equipped with a screw-up mechanism. A valve mechanism is disposed with the point of force directly below the chute pipe, a weight acting as the point of force is suspended by a hanging string at a position within the chute that ensures a predetermined fall distance, and the hanging string is A submarine or well well characterized in that a wire line for hanging a flexible cylinder is fixed by passing a protruding knife edge over a fixed cutting table, and a setter for cutting a hanging string is attached to the wire line. equipment for transporting different fluids in