CN106153269A - A kind of test joint - Google Patents

Abstract

The present invention relates to a kind of test joint, it includes top connection, lower contact and test instrumentation pipe string；The upper end outer cover of top connection is provided with thread protector lid, and lower end is connected with lower contact；The upper end sealing shroud of lower contact is connected to outside the lower end of top connection, and the outside sealing shroud in lower end is provided with lower thread protector lid；The side, upper end of lower contact is equiped with plug；Side, the upper end outer wall of lower contact is oblique offers detection hole；Union lid all it is arranged with outside the connecting portion of upper and lower joint and outside the connecting portion of lower contact and lower thread protector lid；Slips all it is equiped with between union lid and upper and lower joint；Slips is all fixed by securing member with lower the radial and axial of union lid；Test instrumentation string includes that snap joint, needle-valve, three way cock and Pressure gauge connect composition.Easy installation and removal of the present invention, easy for operation, can quickly test sealing property after re-assemblying, save the time for entering tool string under scene, decreased potential safety hazard, improve production efficiency.

Description

A kind of test joint

Technical field

The present invention relates to steel wire and wireline operation ground installation technical field, particularly relate to a kind of easy accessibility, quick and The test joint of sealing property can be quickly tested after re-assemblying.

Background technology

Steel wire, the feature of wireline operation are band press operations, seal the most intact the most important, usually in operation process, Need to take apart and enter steel wire cable instrument under the well head control equipment on ground, it is necessary to often take well head apart and control equipment (one As be lubricator and preventer junction), often rubber seal will have been damaged by dismounting, owing to other well heads control to set Standby (lubricator or preventer) detects the effect of sealing property voluntarily after all can not realizing dismounting, enter to re-assembly under instrument After, it is impossible to ensure that sealing property is the most intact, thus there is potential safety hazard, therefore test joint is connected on lubricator and blowout prevention Device junction is as often taking position apart, and test joint carries the gauge pipe string of detection sealing property, so every time dismounting The sealing property that only just can detect self after complete with a handlance fast and easily is the most intact.Test joint is exactly After having dismounted, armrest press pump is suppressed, and by Pressure gauge, just can directly judge that inner sealing performance is the most intact, reaches every time The purpose of safety work.Generally known test joint, is distinguished by internal diameter, have 2.5 ", 3 ", 4 ", 5 ", 6.38 " etc.. Before common steel wire and cable execute-in-place, there is no test joint, when entering steel wire cable tool string under needs when, can only tear open Open after directly lubricator and preventer being reconnected after entering under lubricator and preventer junction, instrument, begin to work, have It is likely to occur dismounting position sealing ring in unloading process to damage, but operator cannot detect, and so needs a large amount of manpower things Power, also loses time to check which position is revealed, and test joint is to press to save substantial amounts of inspection and test period Power test, without test joint, cannot be accurate, check which link has leakage efficiently, if can not be timely Change problematic caulking gum part, the most directly operate, it is possible to pressure leakages occurs, it is impossible to normally make Industry, it could even be possible to cause security incident.

The most originally there is no test joint, under needing in well head steel wire operation/wireline operation, entered steel wire cable The when of tool string, it is necessary to often take well head apart and control equipment (generally lubricator 1 and preventer 2 junction A at), often Rubber seal will have been damaged by dismounting, re-assemblies at A, frequently dismantle under instrument after entering, it is impossible to correctly judges at A Sealing property is the most intact, owing to other well heads control to examine voluntarily after equipment (lubricator or preventer) all can not realize dismounting Survey the effect of sealing property, enter after re-assemblying under instrument, it is impossible to ensure that sealing property is the most intact, thus there is safety hidden Suffer from.

Above-mentioned understand, for fast, convenient and safe often dismounting and well head after ensureing dismounting every time in shaft mouth operation Equipment sealing property is the most intact, it is necessary to improve prior art operation further, one novel examination of necessary increase Test joint.

Summary of the invention

For the problems referred to above, it is simple, reasonable that the present invention proposes a kind of structure design, and easy installation and removal carries and self examines Survey sealing property, easy for operation, can quickly test sealing property after re-assemblying, for enter under scene tool string saved time Between, decrease potential safety hazard, improve the test joint of production efficiency.

Technical scheme is as follows:

Above-mentioned test joint, including top connection, lower contact, union lid, slips, upper thread protector lid, lower thread protector lid and test Gauge pipe string；Described top connection is the most through is provided with top connection through hole, and the outside coupling in its upper end is arranged with on described protects Wire cover, lower end is connected with described lower contact；The most through lower contact through hole that offers of described lower contact, described lower contact Through hole and described top connection through hole central coaxial；The upper end sealing shroud of described lower contact is connected to outside the lower end of described top connection, The outside sealing shroud in lower end is provided with lower thread protector lid；The side, upper end of described lower contact radially offers and joins with described lower contact through hole Logical pipe plug opening, in described pipe plug opening, coupling is equiped with plug；Side, the upper end outer wall of described lower contact is oblique to be offered and institute State the detection hole of lower contact through hole UNICOM；Outside the connecting portion of described upper and lower joint and described lower contact and lower thread protector lid Union lid all it is arranged with outside connecting portion；Slips all it is equiped with between described union lid and described upper and lower joint；Described slips with Described lower the radial and axial of union lid is all fixed by securing member；Described test instrumentation string includes snap joint, needle-valve and three Pass joint；Described needle-valve includes the first needle-valve and the second needle-valve；Described snap joint one end is connected to described detection hole, the other end Connect described first needle-valve and connect described three way cock wherein one end by described first needle-valve；Another of described three way cock End connection has the second needle-valve, and remaining one end connects Pressure gauge.

Described test joint, wherein: described snap joint is to be connected to described detection hole by variable buckle joint；Described quickly It is all to be connected by variable buckle joint between joint with described first needle-valve, three way cock, the second needle-valve.

Described test joint, wherein: be threaded connection between upper end outer wall and the upper thread protector lid of described top connection.

Described test joint, wherein: by a pair O between the upper end of the outside and described lower contact in the upper end of described lower contact RunddichtringO is tightly connected；Sealed by another O type between lower end outer wall and the inwall of described lower thread protector lid of described lower contact Circle is tightly connected.

Described test joint, wherein: described union lid includes union lid and lower union lid, and described slips includes upper slips And lower slips；Described upper union lid is sheathed on outside the connecting portion of described top connection and lower contact, the lower end of described upper union lid It is threaded connection between the upper end outer wall of inwall and described lower contact；Described upper slips is installed in the upper end of described upper union lid Between the lower end outer wall of inwall and described top connection, the outer wall of described upper slips passes through spiral shell with the upper end inwall of described upper union lid Stricture of vagina connects；Described upper slips is fixed, axially through interior radial through interior hexagonal cylindrical end holding screw everywhere with upper union lid Fix at hexagonal cylindrical end holding screw two；Described lower union lid is sheathed on outside the connecting portion of described lower contact and lower thread protector lid Side, is threaded connection between lower end inner wall and the outer wall of described lower thread protector lid of described lower union lid；Described lower slips is installed Between upper end inwall and the lower end outer wall of described lower contact of described lower union lid；Described lower slips and the radial direction of lower union lid Fixed everywhere by interior hexagonal cylindrical end holding screw, fix axially through at interior hexagonal cylindrical end holding screw two.

Beneficial effect:

Test joint structure of the present invention design advantages of simple, easy accessibility, bottom lubricator and preventer are connected by it Coming, the when of entering steel wire cable tool string under can be used for needing in shaft mouth operation, test joint is as often taking position, instrument apart Under enter after armrest press pump quickly to detect self seal performance the most intact, reach the purpose of safety operation, make on-the-spot behaviour When making more convenient, safe and reliable；Save the time for entering tool string under scene, convenient, decrease potential safety hazard, carry High production efficiency, is suitable to promote and application.

Accompanying drawing explanation

Fig. 1 is the structural representation of test joint of the present invention；

Fig. 2 is state diagram after test joint of the present invention is connected with lubricator, preventer；

Fig. 3 be test joint of the present invention Fig. 2 in enlarged drawing at B；

Fig. 4 is state diagram after lubricator and preventer connection；

Fig. 5 is the enlarged drawing in Fig. 4 at A.

Detailed description of the invention

As it is shown in figure 1, test joint of the present invention, generally axle class formation and include top connection 1, lower contact 2, union lid 3, Slips 4, upper thread protector lid 5, lower thread protector lid 6 and test instrumentation pipe string 7.

This top connection 1 is the most through is provided with top connection through hole 11, and the outside coupling in its upper end is arranged with thread protector lid 5 Closing, lower end is connected with lower contact 2；Wherein, it is threaded connection between upper end outer wall and the upper thread protector lid 5 of this top connection 1.

This lower contact 2 is the most through offers lower contact through hole 21, this lower contact through hole 21 and this top connection 1 Top connection through hole 11 central coaxial.Wherein, the upper end of this lower contact 2 coupling is socketed on outside the lower end of this top connection 1, and under connect 2 upper end inwalls are further opened with a pair lower contact seal groove, be equiped with a pair O types and seal in this pair lower contact seal groove Circle 22, so that the lower end of the upper end of lower contact 2 and top connection 1 is tightly connected；The side, upper end of this lower contact 2 radially offers Pipe plug opening, this pipe plug opening is equiped with plug 23 with mating in lower contact through hole 11 UNICOM and hole；This side, lower contact 2 upper end outer wall Oblique being further opened with detects hole 24, this detection hole 24 and lower contact through hole 21 UNICOM.Meanwhile, outside of the lower end of this lower contact 2 Supporting it be provided with lower thread protector lid 6 and close；The lower end outer wall of this lower contact 2 offers seal groove, is equiped with the 2nd O type in this seal groove Circle 25, lower thread protector lid 6 plays lower end outer wall sealing surface and the effect of the 2nd O RunddichtringO 25 of protection lower contact 2.

This union lid 3 has a pair and i.e. includes union lid 31 and lower union lid 32, and this slips 4 also has a pair and includes Upper slips 41 and lower slips 42.Wherein, on this, union lid 31 is sheathed on outside the connecting portion of this top connection 1 and lower contact 2, on this It is threaded connection between union lid 31 lower end inner wall and lower contact 2 upper end outer wall；This upper slips 41 is installed in union lid 31 Upper end inwall and the lower end outer wall of top connection 1 between, the outer wall of this upper slips 41 passes through with the upper end inwall of upper union lid 31 Threaded；This upper slips 41 is fixed radial through interior hexagonal cylindrical end holding screw everywhere with upper union lid 31, axially leads to Fix at hexagonal cylindrical end holding screw two in crossing.Meanwhile, this lower union lid 32 is sheathed on the company of lower contact 2 and lower thread protector lid 6 Connect outside portion, be threaded connection between lower end inner wall and the outer wall of lower thread protector lid 6 of this lower union lid 32；This lower slips 42 fills It is located between upper end inwall and the lower end outer wall of lower contact 2 of lower union lid 32, this lower slips 42 and the radial direction of lower union lid 32 Fixed everywhere by interior hexagonal cylindrical end holding screw, fix axially through at interior hexagonal cylindrical end holding screw two.

This test instrumentation string 7 is by snap joint 71, needle-valve 72, three way cock 73, Pressure gauge 74 and variable buckle joint 75 even Connect composition；The oblique detection hole 24 being connected to lower contact 2 by variable buckle joint 75 coupling, this snap joint 71 one end；This needle-valve 72 Including the first needle-valve 721 and the second needle-valve 722, this first needle-valve 721 one end is connected to the other end of snap joint 71；This threeway One of them joint of joint 73 is connected to this needle-valve 72 other end, and another joint connects Pressure gauge 74, a remaining joint Connect the second needle-valve 722；Wherein, this snap joint 71, first needle-valve 721, three way cock's the 73, second needle-valve 722 are each other It is all to be connected by double public variable buckle joints 75.Wherein, this test instrumentation string 7 closes the first needle-valve 721 in a pre-installation, from other one Individual second needle-valve 722 is suppressed, and test Pressure gauge 74 is the most intact, opens the first needle-valve 721, by variable buckle joint as intact 75 are connected in lower contact 2.

The use principle of the present invention:

As Figure 2-3, test joint is connected on lubricator 8 with preventer 9 junction as often taking position apart, and Test joint carries at the gauge pipe string B of detection sealing property, only just can be fast with a handlance after having dismantled so every time At the prompt B of detection easily, the sealing property of self is the most intact, specifically by handlance to the pressure on test joint Table 74 is suppressed, and observes Pressure gauge 74 video data, sees whether pressure falls down, if Pressure gauge 74 video data is steady, Without fluctuation, then this section of blowout hookup favorable sealing property is described；If Pressure gauge 74 video data fluctuates, and pressure is the most down Fall, more and more less, then illustrate that this section is sealed with problem, just should take replacing caulking gum part apart.After test-based examination is errorless, from quickly Pressure gauge 74 is unloaded at joint 71, in case being continuing with when next time needs, beginning steel wire/cable safety work that just can be relieved.

Present configuration design advantages of simple, easy accessibility, bottom lubricator and preventer are coupled together, can be used for by it The when of entering steel wire cable tool string under shaft mouth operation needs, after test joint is as often taking apart and entering under position, instrument It is the most intact that armrest press pump quickly detects self seal performance, reaches the purpose of safety operation, when making execute-in-place more Convenient and swift, safe and reliable.

Claims (5)

1. a test joint, it is characterised in that: described test joint includes top connection, lower contact and test instrumentation pipe string；

Described top connection is the most through is provided with top connection through hole, and the outside coupling in its upper end is arranged with thread protector lid, lower end It is connected with described lower contact；

In the most through lower contact through hole that offers of described lower contact, described lower contact through hole and described top connection through hole The heart is coaxial；The upper end sealing shroud of described lower contact is connected to outside the lower end of described top connection, and the outside sealing shroud in lower end is provided with down and protects Wire cover；The side, upper end of described lower contact radially offers and the pipe plug opening of described lower contact through hole UNICOM, described pipe plug opening Interior coupling is equiped with plug；Side, the upper end outer wall of described lower contact is oblique to be offered and the detection of described lower contact through hole UNICOM Hole；

Union all it is arranged with outside the connecting portion of described upper and lower joint and outside the connecting portion of described lower contact and lower thread protector lid Lid；Slips all it is equiped with between described union lid and described upper and lower joint；The radial direction of described slips and described lower union lid and axle To all being fixed by securing member；

Described test instrumentation string includes snap joint, needle-valve and three way cock；Described needle-valve includes the first needle-valve and the second needle-valve； Described snap joint one end is connected to described detection hole, and the other end is connected described first needle-valve and connected by described first needle-valve Described three way cock wherein one end；The other end of described three way cock connects the second needle-valve, and remaining one end connects pressure Table.

2. test joint as claimed in claim 1, it is characterised in that: described snap joint is to be connected to institute by variable buckle joint State detection hole；It is all to be connected by variable buckle joint between described snap joint with described first needle-valve, three way cock, the second needle-valve Connect.

3. test joint as claimed in claim 1, it is characterised in that: between upper end outer wall and the upper thread protector lid of described top connection It is threaded connection.

4. test joint as claimed in claim 1, it is characterised in that: the upper end of described lower contact is outside and described lower contact It is tightly connected by a pair O RunddichtringO between upper end；The inwall of the lower end outer wall of described lower contact and described lower thread protector lid it Between be tightly connected by another O RunddichtringO.

5. test joint as claimed in claim 1, it is characterised in that: described union lid includes union lid and lower union lid, Described slips includes upper slips and lower slips；

Described upper union lid is sheathed on outside the connecting portion of described top connection and lower contact, the lower end inner wall of described upper union lid with It is threaded connection between the upper end outer wall of described lower contact；Described upper slips be installed in the upper end inwall of described upper union lid with Between the lower end outer wall of described top connection, the outer wall of described upper slips is connected by screw thread with the upper end inwall of described upper union lid Connect；Described upper slips is fixed, axially through interior hexagonal radial through interior hexagonal cylindrical end holding screw everywhere with upper union lid Fix at cylinder end clamping fixed screw two；

Described lower union lid is sheathed on outside the connecting portion of described lower contact and lower thread protector lid, the lower end inner wall of described lower union lid And it is threaded connection between the outer wall of described lower thread protector lid；Described lower slips be installed in the upper end inwall of described lower union lid with Between the lower end outer wall of described lower contact；Described lower slips and lower union lid radial through interior hexagonal cylindrical end holding screw four Place is fixing, fixes axially through at interior hexagonal cylindrical end holding screw two.