JPH0458555B2 - - 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 solution is transported after 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 Problems" and "Operation" The present invention was made in view of the above circumstances, and its gist is that a different type of fluid, such as a chemical solution to prevent slippage, is sealed in a bag, and the The bag is suspended and fixed in the bag tearing edge inside the attached protective gauge, the protective gauge is put into the filled fluid, and at the predetermined lowering position, the suspension is released and the bag is hung in the bag tearing edge. The point of this method is to realize supply of the chemical solution in the form of a lump without wasting a single drop of the chemical solution to the place where it is lost.

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

Figures 1a, b, and 1c are diagrams showing the state of the transportation device of the present invention immediately before operation at the bottom of a hole, and are detailed views of two main parts.

In the figure, reference numeral 1 denotes a protection gauge, which has a bottomed vertically cylindrical shape with a guard bar, and has a bag-breaking edge 2 protruding from the bottom.

The edge 2 for tearing the bag is made up of a plurality of cutting edges 2a, . It is good if your mouth opens as you go down.

After enclosing the anti-sludge chemical solution 3, it is suspended in the protective gauge 1 by a hanging cord 4 and stored at a position below the bag tearing edge 2 to ensure a predetermined fall distance.

5 is a wire line for suspending the protection gauge 1, 6 is a cutting table fixed to the wire line 5, and 7 is a knife edge protruding from the cutting table 6, for hanging the bag 3 as shown in Figure b in detail. The string 4 passes over the knife edge 7 and is fastened 8 to the side surface of the cutting table 6.

Reference numeral 9 denotes a messenger wire through which the wire line 5 can pass through the center of the cylinder, and as it falls from the borehole mouth along the wire line 5, it collides with the knife edge 7, cutting the hanging cord 4 and removing the bag 3 from the bag. It is assumed that it is dropped toward the breaking edge 2.

Therefore, according to the present invention having the above configuration, by suspending the protective gauge 1 by the wire line 5 and guiding it to the bottom of the borehole 10, it is possible to transport the chemical solution to prevent mud slippage in a lump to the mud slipping point. .

It is confirmed that the protective gauge 1 has reached the bottom of the hole by measuring the tension of the wire line 5.

Next, the messenger 9 assembled to the wire line 5 is dropped from the 10 mouths of the boring well.

The messenger gear 9 that has reached the falling point cuts the hanging cord 4 and drops the bag 3 toward the bag tearing edge 2, and the bottom of the bag 3 is torn and the sealed anti-sludge liquid is released from the leaking point. is the fisher 1
Diffusion to 1.

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, b, and c are explanatory views of the apparatus of the present invention at the bottom of a boring well, and are detailed views of portions b and c surrounded by lines in figure a. 1...Protection gauge, 2...Edge for tearing the bag, 2
a... Cutting blade, 3... Bag, 4... Hanging string, 5...
Wire line, 6... Cutting table, 7... Knife edge, 8... Fastening, 9... Messenger, 10...
...Boring Well Hole, 11...Fitshya.

Claims (1)

[Scope of Claims] 1. A different type of fluid such as a chemical solution to prevent slippage is sealed in a bag, the bag is suspended and fixed in a protective gauge attached with a bag-breaking edge, and the protective gauge is thrown into the filled fluid. A method for transporting different types of fluids on the seabed or in a well, comprising: releasing the hanging fixation at a predetermined lowering position and tearing the bag with a bag tearing edge. 2 A bag-breaking edge is provided protruding from the bottom of a protective gauge that guards and accommodates a bag filled with a different type of fluid such as a chemical solution to prevent spillage, and the bag is connected to the bag-breaking edge with a hanging string inside the protective gauge. The suspension is suspended at a position where a predetermined fall distance is secured, and the suspension string is fixed by passing it over the protruding knife edge on the cutting table fixed to the wire line for suspending the protective gauge, and cutting the suspension cord to the wire line. A device for transporting different types of fluids on the seabed or in wells, which is characterized in that it can be assembled with a conveyor for use.