CN2249824Y

CN2249824Y - Bidirectional instrument suspender

Info

Publication number: CN2249824Y
Application number: CN94224950U
Authority: CN
Inventors: 赵殿琰; 牛瑞云; 雷宇; 冯国营; 曹祥元; 李军
Original assignee: Exploration And Development Research Team Tuha Petroleum Exploration Campaign C
Current assignee: Exploration And Development Research Team Tuha Petroleum Exploration Campaign C
Priority date: 1994-08-17
Filing date: 1994-08-17
Publication date: 1997-03-19
Anticipated expiration: 2004-08-17

Abstract

The utility model relates to a tool for a suspended type testing instrument of an oil well. The utility model is composed of an upper body 1, an upper locking block 2, a lower locking block 3, a bow-shaped spring centralizer 5, a lower joint 6, etc.; the upper locking block 2 and the lower locking block 3 are split into an upper group and a lower group, and a locking block recovery mechanism 4 which is composed of a locking block recovery core axle 7, a spacing pin 9, a spring 10, etc. is arranged between the upper locking block 2 and the lower locking block. The utility model can carry any testing instrument and conducts underground instrument testing and testing well vehicle release, and the utility model can be placed in a tubing coupling and can achieve the release of a steel wire and the instrument in an ordinary finished well which has no placing short joint. The utility model is suitable for the testing of various oil wells.

Description

Reversible instrument hanger

The utility model is a kind of instrument that is used for the hook wall testing instrument on the oil well.

At present, the oil well conventionally test is to utilize steel wire on the test carriage to carry test instrumentation to go into the well and test.When the measuring pressure recovery curve, test carriage needs to stop 10～15 days in the well site, and the utilization rate of car is very low, and steel wire is immersed in the Korrosionsmedium for a long time, and the steel wire damage is very fast, the lost of life, sometimes also contingency can occur, be fractureed as steel wire, instrument is fallen into down-hole etc.This method of testing is the expense height not only, but also brings inconvenience.In addition, the unidirectional instrument hanger of external RZB type must be seated in the special landing nipple, because the completion tubular column of most oil wells both domestic and external all is not equipped with landing nipple, this has just limited its scope of application.

The purpose of this utility model is to provide a kind of test instrumentation that can carry to go into the well and can realize the new tool that is suitable for various oil well tests that test instrumentation and well testing truck are slipped out of the hand, this utility model can be seated in the tubing coupling, so that in the common tubing string of the completion of no any landing nipple, realization steel wire and instrument are slipped out of the hand, leave at well testing truck under the situation in well site, oil well is carried out the long-time continuous test.

The utility model is achieved in that it is by upper body 1, goes up lock dog 2, following lock dog 3, lock dog recovering mechanism 4, lower contact 6, bow spring centralizer 5 formations such as grade, last lock dog 2 is divided into two groups up and down with following lock dog 3, last lock dog 2 is connected with upper body 1 bearing pin, and following lock dog 3 is connected with lock dog recovering mechanism 4 bearing pins, is descending to have between lock dog 3 and the lower contact 6 lock dog recovering mechanism 4 its centres that the lock dog recovering mechanism that is made of lock dog recovery mandrel, spring, spacer pin etc. is arranged.

Lock dog recovering mechanism 4 is to reclaim mandrel 7 by lock dog, and spring 10 and spacer pin 9 constitute, and have control hole slot 8 on the mandrel 7, and spacer pin 9 places control hole slot 8.

Advantage of the present utility model is: because the locking of upper and lower two groups of lock dogs guarantees that hanger not only can be seated in the landing nipple, can also be seated in the tubing coupling, have the scope of application widely, satisfy pressing for of oilfield test.It can make test instrumentation and test carriage slip out of the hand, and test carriage can leave the well site, and same car can carry out multiwell test, improves the utilization rate of test carriage; Also can avoid steel wire to be immersed in for a long time in the Korrosionsmedium in oil field, thereby prolong the application life of steel wire; Available ordinary steel wire operation.The work pulling is simple and reliable; Have certain flow channels, during downhole testing, do not influence ordinary production.

Fig. 1 is a reversible instrument hanger structural representation.

Below in conjunction with accompanying drawing the utility model is done further proof: the utility model is by upper body 1, goes up lock dog 2, following lock dog 3, lock dog recovering mechanism 4, lower contact 6, bow spring centralizer 5 formations such as grade, cooperation is used with the probe that is lowered to and pulls out of special use, it and the unidirectional instrument hanger of RZB type major different are that lock dog divides two groups up and down, and design has by lock dog recovery mandrel 7, the lock dog recovering mechanism 4 that spring 10 and spacer pin 9 etc. constitute.This structure has guaranteed that not only hanger may be locked in the landing nipple, main is to have guaranteed that hanger may be locked in the groove of tubing coupling and oil pipe formation, one of major part that this instrument upper body 1 is the instrument hanger, it is mainly used in the location and the support of lock dog 2, last lock dog 2,3 liang of groups of following lock dog lock dog are locked in the instrument hanger in the groove of landing nipple or tubing coupling and oil pipe formation, last lock dog 2 is connected with upper body 1 usefulness bearing pin, and last lock dog 2 can rotate around bearing pin, thereby realizes stretching out or regaining.Lower contact 6 is used to connect test instrumentation, and bow spring centralizer 5 plays a part to set upright.Distinctive feature of the present utility model is lock dog recovering mechanism 4, and this mechanism is made of mandrel 7, control hole slot 8, spacer pin 9, spring 10.Lock dog recovering mechanism 4 is used to reclaim the instrument hanger, lock dog is regained, have the control hole slot 8 that the control lock dog stretches out or regains on the mandrel 7, spacer pin 9 places control hole slot 8, do the time spent not being subjected to external force, mandrel 7 is in the limes superiors position under spring 10 effects, control hole slot 8 on the mandrel 7 is just in time aimed at the bottom of lock dog 3 down at this moment, following lock dog 3 is in extended position under spring 10 effects, when when pulling probe out and apply downward masterpiece and be used for mandrel 7, spring 10 is compressed, mandrel 7 moves down under the guiding of spacer pin 9, and along with moving down of mandrel 7, the mandrel 7 of control hole slot 8 upper ends makes down lock dog 3 bottoms be subjected to an outside thrust, following lock dog 3 rotates around its bearing pin, and mandrel 7 sizes guarantee down that just in time lock dog thoroughly regains.After the external force that acts on mandrel 7 is removed, be fishing tool together with after pulling probe out and throwing off with the instrument hanger, mandrel 7 is moving to the limes superiors position on each under the spring force effect, spacer pin with on move to down lock dog 3 bottoms, following lock dog 3 bottoms enter in the spacing hole slot, and following lock dog 3 becomes extended position from reclaiming the position.Lock dog recovering mechanism 4 has successfully been realized the withdrawal of time lock dog and has been stretched out like this.

Claims

1. reversible instrument hanger, it is by upper body (1), last lock dog (2), following lock dog (3), lock dog recovering mechanism (4), lower contact (6), bow spring centralizer formations such as (5) is characterized in that: go up lock dog (2) and be divided into two groups up and down with following lock dog (3), last lock dog (2) is connected with upper body (1) bearing pin, following lock dog (3) is connected with lock dog recovering mechanism (4) bearing pin, between lock dog (3) and the lower contact (6) lock dog recovering mechanism (4) is being arranged down.

2. reversible instrument hanger according to claim 1, it is characterized in that: lock dog recovering mechanism (4) is to reclaim mandrel (7) by lock dog, spring (10) and spacer pin (9) constitute, and have control hole slot (8) on the mandrel (7), and spacer pin (9) places control hole slot (8).