CN2315296Y

CN2315296Y - Testing wellhead trigger for oil well liquid level depth

Info

Publication number: CN2315296Y
Application number: CN98201008U
Authority: CN
Inventors: 张青凯; 孙国峰; 孙太升
Original assignee: JINSHI PETROLEUM TESTING TECHNOLOGY Co Ltd BEIJING
Current assignee: JINSHI PETROLEUM TESTING TECHNOLOGY Co Ltd BEIJING
Priority date: 1998-01-24
Filing date: 1998-01-24
Publication date: 1999-04-21
Anticipated expiration: 2008-01-24

Abstract

The utility model discloses a testing wellhead trigger for an oil well liquid level depth, which is composed of a casing, a triggering device, a triggering driving and reversing device, a sounding bullet, a bullet magazine, a sound sensor and a pressure sensor. The triggering driving and reversing device is composed of a trigger and an upper and a lower ratchets which are mutually engaged. The simple mechanism has the double functions of replacing the sounding bullet and driving firing pins to trigger the sounding bullet and stable fitting and exact triggering. The aim of triggering corresponding quantity of sounding bullet is obtained via changing the number of the ratchets. The utility model having simple mechanism is suitable for industrial bulk production.

Description

Oil-well level shaft mouth test firing device

The utility model relates to a kind of well head firing device that is used for the oil-well level test, belongs to pumpingh well down-hole level Testing apparatus.

For pumpingh well is carried out dynamic management, understand the oil reservoir liquid-producing capacity, must carry out routine test to oil well down-hole level, so that analyze in view of the above and oil well and pumping unit are carried out reasonable management.In field produces, mostly adopt gunpowder sound-bomb type wellhead assembly, measure the level of oil well by the acoustical reflection principle.Traditional single-shot sound bullet firing device, owing to reasons such as use inconvenience, gradually be not that people are used, in recent years, many multiple sound that has nothing in common with each other occurs and played firing device, but often have following defective: the sounding attack and do not send out, parts are fragile, operation inconvenience or mechanism's complexity or the like, though the novel oil-well test gauge of the disclosed utility model of Chinese patent CN 2205443Y solved hit and do not send out, problem such as parts are fragile, yet the piston shifting block transmission of its bullet firing lock is too complicated; A kind of sound-bomb type measuring oil well liquid level depth of the disclosed utility model of Chinese patent CN 2173862Y wellhead assembly, though the transmission of its bullet firing lock is simple, the rotation of camshaft has reached replacing sound bullet and has driven the dual purpose of striker percussive sound bullet, yet, because its striker and hammer are monolithic construction, striker is very behind the quick-wearing, need striker is changed together with hammer, cause waste, and, since itself structures shape its striker, hammer can only be taked form one to one with the sound bullet, has caused the hammer and the fixture that connect together with striker to repeat to be provided with, mechanism's complexity causes waste.

The utility model has overcome above many disadvantages, and is putting before this, reaches the optimization of simplifying and pull the trigger transmission principle most of mechanism.

The purpose of this utility model is achieved in that percussion lock of the present utility model is one or more striker bodies; Percussion drives and reversing arrangement is made up of a trigger and a pair of intermeshing upper and lower ratchet, and ratchet is associated in by linkage with the striker body.External force is descended the ratchet motion relatively by ratchet on the trigger actuated, when drive striker body moves up and down, the plan-position of striker body is also changed.Like this, moving downward of striker body can reach the purpose of percussive sound bullet; And the variation of striker body plane position can make its percussion be in the sound bullet of diverse location.Like this, simple upper and lower detent mechanism has reached replacing sound bullet and has driven the dual purpose of striker percussive sound bullet.And, because upper and lower detent mechanism can be meshing with each other definitely reliably, cooperate and stablize, thereby guaranteed the accuracy of pulling the trigger.

In addition, striker and hammer adopt split-type structural, and each striker body all comprises an independently striker, and all striker bodies have a common hammer.Like this, the mode of the corresponding a plurality of different strikers of hammer not only makes percussion lock simplify, and also makes when changing striker, and hammer is kept, and avoids waste.

Like this, the utility model is owing to adopt upper and lower detent mechanism to drive and reversing arrangement as percussion, same mechanism has played replacing sound bullet and has driven the double action of striker percussive sound bullet, make easy and simple to handle, mechanism is simple, and the stable transmission of upper and lower detent mechanism cooperates makes percussion accurately, can not hit and not send out, striker and hammer adopt split-type structural, and when mechanism was further simplified, hammer was not fragile.

Below, in conjunction with the accompanying drawings,, the utility model is further specified by a specific embodiment of the present utility model:

Fig. 1 is the longitudinal section of the utility model embodiment;

Fig. 2 is the schematic diagram after launch along 1-1 ' side of ratchet up and down among Fig. 1.

Referring to Fig. 1:

Present embodiment oil-well level shaft mouth test firing device, form by housing 1, percussion lock 2, percussion driving and reversing arrangement 3, sounding bullet 4, magazine 5, sound transducer 6 and pressure sensor 7, sounding bullet 4 is contained in 5 li of magazines, percussion lock 2 is a striker body 2, striker body 2 comprises striker 21 and hammer 22 two parts, and the two is a split-type structural; Housing is two parts about in the of 1 minute, and upper and lower casing 11 and 12 is fixed together; Magazine 5 is contained in the lower house 12 together with sounding bullet 4 wherein, and sound transducer 6 and pressure sensor 7 are contained on the lower house 12, and percussion lock 2, percussion drive and reversing arrangement 3 is contained in the upper shell 11.

Percussion drives and reversing arrangement 3 is made up of a trigger 31 and a pair of intermeshing upper and

lower ratchet

321 and 322 that has upper and

lower pawl base

323 and 324, corresponding with it the respectively upper and lower pawl base of upper and lower ratchet 321,322 323,324 is fixedly connected or make one, has pawl teeth respectively on the upper and

lower ratchet

321 and 322, pawl teeth is annular right angle helical teeth (be that pawl teeth on the ratchet is annular and distributes, two flank of tooth of each blade tooth is respectively inclined-plane and vertical plane); Pawl

base

323 and 324 is the linkage between percussion driving and reversing arrangement 3 and the percussion lock 2, and wherein, last pawl base 323 is fixedlyed connected with hammer 22, striker 21 is contained in down in the pawl base 324, and can slide up and down therein, following pawl base 324 is fixed in the housing 1, referring to Fig. 1.

Trigger 31 is made up of rocking arm 311 and mandrel 312, has safety plug (not drawing among the figure) on the rocking arm 311, and the upper end of mandrel 312 is nested in the rotating shaft of rocking arm 311; The lower end is passed pawl base 323 and is nested together with it, and mandrel also is with holddown spring 325 outward, and holddown spring 325 places between upper shell 11 and the last pawl base 323.Above-mentioned mandrel 312 and rocking arm 311 and go up between the pawl base 323 nested after, when rotating rocking arm 311, mandrel 312 can together rotate with last pawl base 323 thereupon.Nested concrete measure can be different, for example: reaching pawl base 323 nested places with rocking arm 311, the profile of mandrel 312 adopts prism-shaped, adapts with it; rocking arm 311 reaches the corresponding site of going up pawl base 323 and offers identical shaped with big or small prismatic hole, to reach nested purpose.

Referring to Fig. 1, but present embodiment is the firing device of two sounding bullets of running fire, and sounding bullet 4, magazine 5 and striker body 2 are two, and corresponding one by one, when upper and lower ratchet intermeshed, the axis of the sounding bullet 4 of above-mentioned mutual correspondence, magazine 5 and striker body 2 was on same straight line; Referring to Fig. 2, adapt with it, have two pawl teeth on the upper and

lower ratchet

321 and 322 respectively.

Referring to Fig. 1, each striker body 2 includes a striker 21, and striker 21 also is with 211, two strikers of firing pin spring, 21 corresponding common hammers 22 outward away from an end of hammer 22; When upper and lower ratchet intermeshed, just corresponding with one of them striker 21 with the hammer 22 that last pawl base 323 is fixedly connected, the axis of the two was in a straight line, and forms a striker body 2.

Referring to Fig. 1, Fig. 2, when external force acts on trigger 31, and by mandrel 312 and go up pawl base 323 and drive and go up ratchet 321 when ratchet 322 rotates down, the blade tooth pitch face S of last ratchet 321 ₃₂₁The edge is the blade tooth pitch face S of ratchet 322 down ₃₂₂Have two kinds of motions that make progress with along the circumferential direction, behind a tooth pitch, the blade tooth straight-sided flank D of last ratchet 321 ₃₂₁Just along the blade tooth straight-sided flank D that descends ratchet 322 ₃₂₂Motion vertically downward, at this moment, owing to be equipped with holddown spring between upper shell 11 and the last pawl base 323, the spring 325 that in aforementioned movement, is compressed, its elastic force has just had the effect of ratchet 321 in the downward promotion, and like this, original just edge is the blade tooth straight-sided flank D of ratchet 322 down ₃₂₂Yun Dong last ratchet 321 under the effect of elastic force, drives hammer and washes away downwards vertically downward, and bump striker 21 is pulled the trigger the corresponding sounding bullet 4 in its below, produces ping.Ping is propagated to the down-hole along oil sets annular space, when running into obstruction such as tubing coupling, phonetic symbol, liquid level, just produces reflected impulse, and the ping of returning is received by sound transducer 6, reaches the purpose of test level.Like this,, just can pull the trigger next sounding bullet, reach the purpose of the two sounding bullets of percussion through behind the next tooth pitch.

Like this, because upper and lower detent mechanism can be meshing with each other definitely reliably, cooperate stable, thereby guaranteed the accuracy of percussion, and, because same mechanism played replacing sound bullet and driven the double action of striker percussive sound bullet, make easy and simple to handle, mechanism is simple.

In addition, striker and hammer adopt split-type structural, the corresponding common hammer of all strikers.Like this, percussion lock is simplified, also made when changing striker, hammer is kept, and avoids waste.

By changing ratchet ratchet number and corresponding striker and firing pin spring number, sounding bullet and magazine number, just can reach the purpose of percussion respective numbers sounding bullet.

In addition, the existence of firing pin spring 211, each percussion is finished after, striker 21 rebounds, and breaks away from and the contacting of sounding bullet, and has increased the safety of this device.

The specification of the sounding bullet 4 that use in each oil field varies in size, and for adapting with it, also is furnished with the different cartridge chamber 5 ' of specification in the magazine 5.The external diameter of cartridge chamber 5 ' is identical, and (internal diameter of magazine 5 is by the size design of maximum specification sounding bullet, so that the sounding bullet of maximum specification can directly fill in the magazine 5) closely cooperates with magazine 5; The internal diameter of cartridge chamber 5 ' is determined according to the size dimension of different size sounding bullet.Like this, the utility model is just applicable to the sounding bullet of multiple different size size dimension.

In addition, the pressure sensor 7 in the lower house 12 can satisfy the requirement that some oil well needs are measured oil-pumping well sheath pressure simultaneously.

Claims

1. oil-well level shaft mouth test firing device, form by housing, safety plug, percussion lock, percussion driving and reversing arrangement, an above sounding bullet and corresponding magazine and sound transducer, the sounding bullet is contained in the magazine, and percussion lock is one or more striker bodies; Housing divides two parts up and down, and last lower house is fixed together; Magazine is contained in the lower house together with the sounding bullet that is mounted in it, and sound transducer is contained on the lower house, and percussion lock, percussion drive and reversing arrangement is contained in the upper shell; It is characterized in that: percussion drives and reversing arrangement is made up of a trigger and a pair of intermeshing upper and lower ratchet, and an above pawl teeth is arranged respectively on the upper and lower ratchet, and pawl teeth is an annular right angle helical teeth; Upper and lower ratchet and striker body link together by linkage.

2. oil-well level shaft mouth test firing device according to claim 1 is characterized in that: above-mentioned linkage for and the corresponding respectively upper and lower pawl base of upper and lower ratchet, the pawl base that ratchet is corresponding with it is fixedly connected or make one; Following pawl base is fixed in the housing.

3. oil-well level shaft mouth test firing device according to claim 1 is characterized in that: pawl teeth, striker body and sounding bullet three quantity equate; The striker body comprises striker and hammer two parts, and the two is a split-type structural; Each striker body all comprises an independently striker, and all striker bodies have a common hammer.

4. oil-well level shaft mouth test firing device according to claim 3 is characterized in that: also be with firing pin spring on the striker.

5. according to claim 1 or 2 or 3 described oil-well level shaft mouth test firing devices, it is characterized in that: go up pawl base and fixedly connected with hammer, striker is distributed in down in the pawl base, and can slide up and down therein; When upper and lower ratchet intermeshed, hammer was corresponding with one of them striker, and the axis of the two point-blank.

6. oil-well level shaft mouth test firing device according to claim 1 and 2, it is characterized in that: trigger is made up of rocking arm and mandrel, the upper end of mandrel is nested in the rotating shaft of rocking arm, the other end passes pawl base and nests together with it, mandrel also is with holddown spring outward, and holddown spring places between housing and the last pawl base.

7. according to claim 1 or 3 described oil-well level shaft mouth test firing devices, it is characterized in that: magazine quantity equates with sounding bullet quantity in the lower house, when upper and lower ratchet intermeshed, magazine and striker were corresponding one by one, and the axis of corresponding magazine and striker point-blank.

8. oil-well level shaft mouth test firing device according to claim 1, it is characterized in that: cartridge chamber is housed in the magazine, and the two closely cooperates.

9. oil-well level shaft mouth test firing device according to claim 1 is characterized in that: pressure sensor also is housed on the lower house.