CN201068783Y

CN201068783Y - Thermal washing wax-clearing anti-pollution apparatus

Info

Publication number: CN201068783Y
Application number: CNU2007200254874U
Authority: CN
Inventors: 涂中群; 王荣杰
Original assignee: TU ZHONGQUN WANG RONGJIE
Current assignee: TU ZHONGQUN WANG RONGJIE
Priority date: 2007-07-27
Filing date: 2007-07-27
Publication date: 2008-06-04
Anticipated expiration: 2017-07-27

Abstract

The utility model relates to a thermal washing and paraffin removal device which is anti-pollution and is used for thermal washing and paraffin removal in a paraffin-troubled well. The thermal washing and paraffin removal device comprises an upper tie-in, an outer seal pipe, a spring, a piston, an outer obturating ring, an inner obturating ring and an inner pipe. The upper part of the outer seal pipe is connected with the lower part of the upper tie-in in a big screw thread way; the upper part of the inner pipe is connected with the upper tie-in in a small screw thread way; the spring and the piston are arranged between the outer seal pipe and the inner pipe, and the spring is positioned above the piston; the outer obturating ring is arranged between the outer seal pipe and the piston; the inner obturating ring is arranged between the inner pipe and the piston, the inner pipe is provided with a through hole which is covered by the piston, and the through hole is positioned above the inner obturating ring. When washing the well, the pressure of a sleeve is higher than that of the inner part of a flow string, the piston moves upwards, the through hole is exposed, the flow string under a paraffin-troubled point is communicated, the well washing water inside the inner pipe mixes with the extracted liquid and outpours upwards, thereby can realize the well washing, , the well washing water is not required to recycle in the bottom of the flow string, can have high thermal efficiency, save labor power and physical resources, prevent the well washing liquid from entering an oil layer to cause oil layer pollution, and increase the well washing effect.

Description

The hot-washing wax remover environmental control system

One, technical field

The utility model belongs to the instrument that oil well is used, particularly a kind of hot-washing wax remover environmental control system.

Two, background technology

In the oilfield development process, hot cleanout and paraffin removal of oil well is a daily management maintenance job, because oil well paraffinication point is all relatively by last, normal wax removal operation is carried out heat with whole well sections often and is washed, the hot clean-up well segment length, heat waste is big, and hot washing lotion amount is big, working time is long, well washing effect is poor, and well-flushing liquid misses polluted reservoir easily, causes oil well output to reduce, serious needs carry out the de-plugging measure and just can return to normal production, and cause the waste of human and material resources, financial resources.

Three, summary of the invention

The purpose of this utility model provides a kind of hot-washing wax remover environmental control system, on being installed under the wax deposition point on the flow string, the flow string above to wax deposition point carries out hot-washing wax remover, saves human and material resources, prevent that well-flushing liquid from entering the oil layer pollution oil reservoir, improve well washing effect.

The purpose of this utility model is achieved in that by top connection, outer sealed tube, spring, piston, exterior seal ring, inner seal ring, interior pipe to be formed, outer sealed tube top connects with top connection bottom major thread, in pipe top connect with top connection portion minor thread, mounting spring, piston between outer sealed tube and the interior pipe, spring is on the piston, between outer sealed tube and the piston exterior seal ring is installed, between interior pipe and the piston inner seal ring is installed, on the interior pipe linked hole is arranged, linked hole is covered by piston, and linked hole is on the inner seal ring.

The beneficial effects of the utility model are: pipe well-flushing in well-flushing water enters from linked hole, do not need from the flow string bottom cycle, and thermal efficiency height is saved human and material resources, prevents that well-flushing liquid from entering the oil layer pollution oil reservoir, improved well washing effect.

Four, description of drawings

Accompanying drawing is the assembling drawing of the utility model embodiment.

Five, the specific embodiment

Below in conjunction with accompanying drawing embodiment of the present utility model is described.

As shown in the figure, by top connection 1, outer sealed tube 2, spring 3, piston 4, exterior seal ring 5, inner seal ring 7, sheath 9, interior pipe 10 is formed, outer sealed tube 2 tops connect with top connection 1 bottom major thread, interior pipe 10 tops connect with top connection 1 bottom minor thread, mounting spring 3 between outer sealed tube 2 and the interior pipe 10, piston 4, spring 3 is on the piston 4, exterior seal ring 5 is installed between outer sealed tube 2 and the piston 4, between interior pipe 10 and the piston 4 inner seal ring 7 is installed, on the interior pipe 10 linked hole 6 is arranged, linked hole 6 is covered by piston 4, and linked hole 6 is on the inner seal ring 7.Interior pipe 10 bottoms are external screw thread, and the external screw thread on interior pipe 10 lower external thread connects with sheath 9, and import 8 is arranged on the sheath 9.

When going into the well, connect a cover packer in its underpart, during well-flushing, under the packer effect, casing pressure is higher than the flow string internal pressure, and promptly piston 4 bottom pressure are higher than upper pressure, under differential pressure action, produce thrust upwards, make spring 3 compressions, stored energy is when piston 4 bottom pressure are higher than the top certain pressure, the upwards thrust that pressure reduction produces is greater than initial tension of spring, piston 4 is up, and piston 4 no longer covers linked hole 6, and connection holes 6 exposes, flow string under the wax deposition point is by UNICOM, well-flushing water enters from the import 8 of sheath 9, mixes upwards outflow with extraction liquid in the pipe 10 again in linked hole 6 enters, and realizes well-flushing, therefore, well-flushing water does not need from the flow string bottom cycle, and thermal efficiency height is saved manpower, material resources, prevent that well-flushing liquid from entering the oil layer pollution oil reservoir, improve well washing effect.

When stopping well-flushing, piston 4 bottom pressure descend, and spring 3 releases energy, and promotes piston 4 and resets, and piston 4 covers linked hole 6 again, and the liquid in the interior pipe can not release, and oil well can ordinary production.

Claims

1. hot-washing wax remover environmental control system, it is characterized in that: by top connection (1), outer sealed tube (2), spring (3), piston (4), exterior seal ring (5), inner seal ring (7), interior pipe (10) is formed, it is characterized in that: outer sealed tube (2) top connects with top connection (1) bottom major thread, interior pipe (10) top connects with top connection (1) bottom minor thread, mounting spring (3) between outer sealed tube (2) and the interior pipe (10), piston (4), spring (3) is on the piston (4), between outer sealed tube (2) and the piston (4) exterior seal ring (5) is installed, between interior pipe (10) and the piston (4) inner seal ring (7) is installed, on the interior pipe (10) linked hole (6) is arranged, linked hole (6) is covered by piston (4), and linked hole (6) is on the inner seal ring (7).

2. hot-washing wax remover environmental control system according to claim 1 is characterized in that: interior pipe (10) bottom is an external screw thread, and the external screw thread on interior pipe (10) lower external thread connects with sheath (9), and import (8) is arranged on the sheath (9).