SU1303689A1 - Equipment for driving fluid from pipe string ,particularly, water-separating string - Google Patents

Abstract

The invention relates to the field of drilling wells through a water separation column (VC) from floating drilling rigs. The goal is to increase the reliability of the equipment. To do this, it contains a column 1 of pipes, in the nickname of which there is a cylindrical body with an elastic packer 2, the cavity of which is hydraulically communicated with the cavity of the body. Last (L with with about with O5 00 WITH fut.1

Description

made of two telescopic spring-loaded springs 4 relative to each other sections (C) 5 and 6. Fixation C 5 and 6 is carried out using a bayonet assembly consisting of a pin 9 on C 6 and a bayonet groove on: the inner surface C 5. It has Mounted between the packer 2 and the end of the C 6 spring-loaded disc valve 1I, blocking the flow area of the housing. Under the packer 2 between the VC and the body is a node overlapping the annular space

one

The invention relates to the drilling of wells through a water separation column from floating drilling rigs, in particular to devices for displacing the solution from the water separating column.

The purpose of the invention is to increase the reliability of the equipment

Fig. 1 shows the device at the moment of descent into the water separation column, the flap valve is open; 2; the same, at the time of the solution being pushed out by water, the flap valve is closed; Fig. 3 shows a water separation column with a block of preventers and a column with a device lowered into it, a general view; figure 4 - the position of the co. tubes with a device in a dewatering column during the period of solution displacement with water.

The equipment for displacing the liquid from the water separating column contains a column of lowered pipes 1, in the lower part of which there is a cylindrical body equipped with an elastic ball-shaped packer 2, the internal cavity of the packer through the side holes 3 communicating with the pipe inner channel. The cylindrical body is made of two telescopic spring-loaded spring 4 one relative to the other sections 5 and 6.

Spring 4 pasMeDteHa between the shoulder of the end sleeve 7, which is a continuation of the inner section 6 of the housing, and the ledge 8 on the inside of the block of preventers. Below them, the BC and the associated pipeline with its cavity place the pipeline for supplying the working fluid to the packer 2. Turning on the preventor clamp the lower part of the housing. By turning column 1 and lifting it up, close valve 1 1. The pipeline is pumped into the packer 2 through the pipe and opening the preventer opens the case. The column 1 is lifted upward, and the solution above the packer 2 is expelled through a vent to the circulating system. 4 il.

the surface section of the housing 5. The inner and outer telescopic sections of the body are fixed one relative to the other with the aid of a bayonet unit consisting of a pin 9 on the inner section of the cylindrical telescopic body and the bayonet groove 10 on the inner surface of the outer section of the body.

The outer section 5 of the telescopic body has a spring-loaded disc valve 11 installed by an interdullary packer and an end face of the inner section of the body.

flow area of the housing. The valve opens with an end sleeve 7 at the lower fixed position in the housing of the inner section 6 of the housing. The side openings 3 of the housing are blocked by check valves 12 opening from the inner cavity of the packer. The housing is provided at the bottom with a nipple 13 for connection with a blind socket 14 (FIG. 3). Water trap

the column 15, filled with the circulating solution, is mounted on the block of preventers .16 composed of two spot 17 and two universal 18 preventers that are

overlap the annular space between the cylindrical body and the water separation column. Between the two plate preventers, a pipeline is connected to the block of preventers.

19 for supplying a working fluid to the packer 2 connected at one end to

pressure pumps on a floating drilling rig, and the other - St. It is connected to the water separating cavity under the preventer assembly 18. At the top, the water separating column is made with a side outlet 20 for draining the liquid from the annular space of the water separating column.

The operation of the liquid displacement device is as follows.

A deaf pipe 14 is lowered into the block of preventers through a water separation column, which seals the well by blocking the dies. Next, the column 1 is lowered to the block preventers cylindrical body with a packer 2 so that the lower part of the body was inside the upper preventer, while the valve 1I is open, because the shank of the column 1 is fixed in the lower position. Turning on the universal preventer, I clamp the lower part of the body, then by turning the column and lifting it up, close the flap valve 11. Pump water through pipe 19 and inflate the elastic packer 2. Release the case to the top by opening the universal preventer. In doing so, the solution above the elastic packer is forced out through the lateral outlet 20 and enters the circulation system. As you climb

devices under it continuously feeding space.

Under the pressure of water, which, after the device reaches the surface, completely replaces the solution.

Claims (1)

5 claims O five The equipment for displacing the liquid from the pipe string, mainly water separating, includes a cylindrical body with a flexible packer located in the lower part of the lowered pipes and an elastic packer, the cavity of which is hydraulically connected to the body of the cylindrical body, and a pipeline for supplying the working fluid to the packer. in order to increase the reliability of equipment operation, it is equipped with a node for covering the annular space between the cylindrical body and the water separating column located under the packer; The drip body is made of two telescopic spring-loaded sections one relative to the other, the inner of which has a pin, and the outer one has a disk valve to close the axial channel of the cylindrical body above the packer and the bayonet grooves on the inner surface to interact with the pin located along the water separation column and connected to its cavity under the overlapping ring0 unit five 0  . -) u 2 . Editor N.Shvydka Compiled by V.Rodina Tehred N.Glushchenko Order 1283/32 Circulation 533 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, Projecto st., 4 Proofreader L. Pilipenko