CN104453775A - Casing checking packer - Google Patents

Casing checking packer Download PDF

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Publication number
CN104453775A
CN104453775A CN201410796388.0A CN201410796388A CN104453775A CN 104453775 A CN104453775 A CN 104453775A CN 201410796388 A CN201410796388 A CN 201410796388A CN 104453775 A CN104453775 A CN 104453775A
Authority
CN
China
Prior art keywords
core pipe
leather cup
upper core
bypass valve
packing cup
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201410796388.0A
Other languages
Chinese (zh)
Inventor
阚红砖
顾宇
张洁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TIANJIN HUIZHU PETROLEUM EQUIPMENT TECHNOLOGY Co Ltd
Original Assignee
TIANJIN HUIZHU PETROLEUM EQUIPMENT TECHNOLOGY Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by TIANJIN HUIZHU PETROLEUM EQUIPMENT TECHNOLOGY Co Ltd filed Critical TIANJIN HUIZHU PETROLEUM EQUIPMENT TECHNOLOGY Co Ltd
Priority to CN201410796388.0A priority Critical patent/CN104453775A/en
Publication of CN104453775A publication Critical patent/CN104453775A/en
Pending legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00Sealing or packing boreholes or wells
    • E21B33/10Sealing or packing boreholes or wells in the borehole
    • E21B33/12Packers; Plugs
    • E21B33/126Packers; Plugs with fluid-pressure-operated elastic cup or skirt
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00Survey of boreholes or wells
    • E21B47/10Locating fluid leaks, intrusions or movements
    • E21B47/117Detecting leaks, e.g. from tubing, by pressure testing

Abstract

The invention relates to the field of the oil field oil well drilling and production technology, in particular to a casing checking packer. The casing checking packer comprises an upper connector, an upper core pipe, a bypass valve, an upper core pipe bypass hole, a connecting sleeve, a liquid via hole, a locking ring fixing sleeve, a locking ring, a packing cup compression sleeve, a ball seat, a lower core pipe, a packing cup, a packing cup framework, a packing cup supporting sleeve and a ball basket, wherein the upper connector and the upper core pipe are connected in a threaded and sealed mode through an oil pipe, the locking ring fixing sleeve is arranged on the lower portion of the upper core pipe bypass hole and connected with the upper core pipe in a threaded mode, the upper core pipe and the lower core pipe are connected in a sealed and threaded mode, and the packing cup framework is used for wrapping rubber below the skirt part of the packing cup, the ball basket is arranged at the bottom of the lower core pipe, and the packing cup supporting sleeve is arranged on the upper portion of the ball basket. Interference sealing is formed through the skirt part of the packing cup and the inner wall of a casing, a good self-sealing effect can be achieved after the packing cup is released from the compression sleeve on the packer, and an oil sleeve pressure difference and a lifting and putting tubular pillar for promoting sealing of the packer do not need to be built.

Description

Test cover packer
Technical field
The present invention relates to oilfield drilling and production technology field, particularly relate to one and test cover packer.
Background technology
Oil well casing causes sleeve pipe to occur leakage phenomena because of reasons such as cementing quality, connecting thread, crustal movement, corrosions, brings unfavorable factor to oil well measure construction and affects crude output.Once leakage situation appears in the non-payzone of oil well, must leakage points be determined before enforcement is repaired, now verify that the method for casing leakage point generally adopts packer, close oil jacket annular space at the above position of payzone, by sleeve pipe pressuring method, sleeve pipe is verified.But existing a few money packers are tested in cover work progress in enforcement, have unfavorable factor in varying degrees, cause construction to have some setbacks, can not accurately judge leak position problem.
As slip-type packer: because of slip-type packer by put and put tubing string, conversion slips track back seat card forms fulcrum, utilize release tubing string suspending weight compression packing element setting, but this kind of packer is not suitable for verifying that leakage points is constructed apart from the position that well head is more shallow and darker, during shallow-layer construction, because tubing string suspending weight deficiency causes setting bad, because of slips contrail difficulty during deep layer construction, cause setting difficulty.Particularly in horizontal well and high angle hole, the problems referred to above are particularly outstanding.
Fluid pressure type and inflatable packer: must can ensure that it is setting when keeping the large and casing pressure of tubing pressure when constructing.Test cover construction to terminate, when above extracting tubing string, the liquid in oil pipe must take ground out of, makes troubles to construction operation.
Summary of the invention
The object of the invention is to the deficiency overcoming above-mentioned technology, and provide one to test cover packer, test cover and look for adapt to oil well deep layer and shallow-layer and Lou constructing.
The present invention for achieving the above object, by the following technical solutions: one tests cover packer, top connection, upper core pipe, bypass valve, the by-pass prot of upper core pipe, bypass valve shear pin, adapter sleeve shear pin, adapter sleeve, liquid pass hole, lock ring fixed cover, lock ring, leather cup wedging ring, ball seat shear pin, ball seat, lower core pipe, leather cup, leather cup skeleton, leather cup support set and cage is comprised, described top connection and described upper core pipe adopt tubing round thread to be tightly connected, described bypass valve outer shroud week is provided with sealing ring, for closing the by-pass prot of described upper core pipe, the bottom of described upper core pipe by-pass prot is provided with described lock ring fixed cover, described lock ring fixed cover is connected with upper core gas thread, described lock ring fixed cover bottom is provided with buttless thread, for closing with the sawtooth buckle teeth on described lock ring, described lock ring is open type, described bypass valve shear pin is used for fixing described bypass valve, described adapter sleeve shear pin is used for fixing described adapter sleeve, described adapter sleeve is provided with described liquid pass hole, the top inner circumference of described leather cup wedging ring is provided with sealing ring, for with the upper core seal of tube, described ball is sat and is utilized described ball seat shear pin to be fixed on described upper core pipe, described upper core pipe adopts sealing thread to be connected with described lower core pipe, described leather cup is arranged on described lower core pipe, and described leather cup skeleton, for wrapping up the rubber in below leather cup skirt section, makes to form complete sealing bottom leather cup, the bottom of described lower core pipe is provided with described cage, sitting and bypass valve, being provided with described leather cup support set, for supporting leather cup purchasing ore on the top of cage for accepting ball sealer and ball.
The invention has the beneficial effects as follows: utilize leather cup skirt section and internal surface of sleeve pipe to form interference seal, close oil jacket annular space, the mode suppressed by sleeve pipe verifies leakage points, after leather cup discharges in the wedging ring packer, a good self-styled effect can be obtained, without the need to setting up oil jacket pressure reduction and handling tubing string to impel packer set, packer electrodelessly can be tested sleeve pipe from top to bottom after entering well and Lou construct, and be provided with bypass valve on seal section top, on open when extracting tubing string, set up oil jacket passage thus, guarantee that packer is carried oil jacket in process communicate upper, liquid in oil pipe and sleeve pipe enters pit shaft smoothly without suction.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is working state schematic representation of the present invention;
Fig. 3 is end-of-job of the present invention, above extracts view;
Fig. 4 is lock ring schematic diagram of the present invention;
In figure: 1, top connection; 2, upper core pipe; 3, bypass valve; 4, upper core pipe by-pass prot; 5, bypass valve shear pin; 6, adapter sleeve shear pin; 7, adapter sleeve; 8, liquid pass hole; 9, lock ring fixed cover; 10, lock ring; 11, leather cup wedging ring; 12, ball seat shear pin; 13, ball is sat; 14, lower core pipe; 15, leather cup; 16, leather cup skeleton; 17, leather cup support set; 18, cage.
Detailed description of the invention
The specific embodiment of the present invention is described in detail below in conjunction with accompanying drawing and preferred embodiment.As shown in Figure 1, one tests cover packer, comprises top connection 1, upper core pipe 2, bypass valve 3, upper core pipe by-pass prot 4, bypass valve shear pin 5, adapter sleeve shear pin 6, adapter sleeve 7, liquid pass hole 8, lock ring fixed cover 9, lock ring 10, leather cup wedging ring 11, ball seat shear pin 12, ball seat 13, lower core pipe 14, leather cup 5, leather cup skeleton 16, leather cup support set 17 and cage 18, top connection 1 and upper core pipe 2 adopt tubing round thread to be tightly connected, bypass valve 3 outer shroud week is provided with sealing ring, for closing upper core pipe by-pass prot 4, the bottom of upper core pipe by-pass prot 4 is provided with described lock ring fixed cover 9, lock ring fixed cover 9 is connected with upper core gas thread, lock ring fixed cover bottom is provided with buttless thread, for closing with the sawtooth buckle teeth on lock ring 10, the feature of lock ring 10 is open type, bypass valve shear pin 5 is for fixing bypass valve 3, adapter sleeve shear pin 6 is for fixed operating sleeve 7, adapter sleeve is provided with described liquid pass hole 8, the top inner circumference of leather cup wedging ring 11 is provided with sealing ring, for with the upper core seal of tube, ball is sat 13 and is utilized ball seat shear pin 12 to be fixed on core pipe, upper core pipe adopts sealing thread to be connected with lower core pipe 14, leather cup 15 is arranged on lower core pipe, leather cup skeleton 16 is for wrapping up the following rubber in leather cup skirt section, make bottom leather cup, to form complete sealing, the bottom of lower core pipe is provided with cage 18 for accepting ball sealer and ball is sat and bypass valve, is provided with leather cup support set 17 for supporting leather cup purchasing ore on the top of cage.
Packer enters well close to after leakage points, the ball sealer that aboveground input one is small size, dropping on ball sits on 13, aboveground injection highly pressurised liquid, linked hole on upper core pipe 2 is applied to the inner chamber of leather cup wedging ring 11, makes the up promotion adapter sleeve 7 of its pressure-bearing cut off adapter sleeve shear pin 6, lock ring 10 wedging ring drive next with up meshing with lock ring fixed cover 9, the restriction that simultaneously leather cup 15 loses wedging ring is discharged, skirt section and internal surface of sleeve pipe fit formed self-styled.Adapter sleeve forms dead point after going upward under leather cup wedging ring promotes and overlapping with the lower surface of top connection 1, see Fig. 2. oil pipe continues rising force value, ball seat shear pin 12 is cut off, and the ball sealer of input and ball are sat and together fallen into cage 18, packer bottom oil jacket UNICOM.When testing cover construction by transferring tubing string step by step, sleeve pipe suppresses mode and carries out.To squeeze into the pressure drop of sleeve pipe, the not anti-liquid of oil pipe judges casing leakage point.Suppress and look for Lou before end-of-job upper lifting pipe post, drop into the ball sealer of a large size, seat is on bypass valve 3, oil pipe boosting bypass valve shear pin 5 is cut off, bypass valve and ball sealer together fall into cage, the by-pass prot 4 be arranged on core pipe is opened, and establishes oil jacket passage like this on leather cup top, and liquid during upper lifting pipe post in the sleeve pipe on leather cup top and oil pipe flows in pit shaft through by-pass prot, cage.Thus when guaranteeing upper lifting pipe post to pit shaft without suction.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (1)

1. test a cover packer, it is characterized in that: comprise top connection, upper core pipe, bypass valve, the by-pass prot of upper core pipe, bypass valve shear pin, adapter sleeve shear pin, adapter sleeve, liquid pass hole, lock ring fixed cover, lock ring, leather cup wedging ring, ball seat shear pin, ball seat, lower core pipe, leather cup, leather cup skeleton, leather cup support set and cage, described top connection and described upper core pipe adopt tubing round thread to be tightly connected, described bypass valve outer shroud week is provided with sealing ring, for closing the by-pass prot of described upper core pipe, the bottom of described upper core pipe by-pass prot is provided with described lock ring fixed cover, described lock ring fixed cover is connected with upper core gas thread, described lock ring fixed cover bottom is provided with buttless thread, for closing with the sawtooth buckle teeth on described lock ring, described lock ring is open type, described bypass valve shear pin is used for fixing described bypass valve, described adapter sleeve shear pin is used for fixing described adapter sleeve, described adapter sleeve is provided with described liquid pass hole, the top inner circumference of described leather cup wedging ring is provided with sealing ring, for with the upper core seal of tube, described ball is sat and is utilized described ball seat shear pin to be fixed on described upper core pipe, described upper core pipe adopts sealing thread to be connected with described lower core pipe, described leather cup is arranged on described lower core pipe, and described leather cup skeleton, for wrapping up the rubber in below leather cup skirt section, makes to form complete sealing bottom leather cup, the bottom of described lower core pipe is provided with described cage, sitting and bypass valve, being provided with described leather cup support set, for supporting leather cup purchasing ore on the top of cage for accepting ball sealer and ball.
CN201410796388.0A 2014-12-18 2014-12-18 Casing checking packer Pending CN104453775A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410796388.0A CN104453775A (en) 2014-12-18 2014-12-18 Casing checking packer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410796388.0A CN104453775A (en) 2014-12-18 2014-12-18 Casing checking packer

Publications (1)

Publication Number Publication Date
CN104453775A true CN104453775A (en) 2015-03-25

Family

ID=52900451

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410796388.0A Pending CN104453775A (en) 2014-12-18 2014-12-18 Casing checking packer

Country Status (1)

Country Link
CN (1) CN104453775A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106351602A (en) * 2016-10-27 2017-01-25 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 Expanding type differential pressure opening type fine leakage finding and leakage checking packer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106351602A (en) * 2016-10-27 2017-01-25 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 Expanding type differential pressure opening type fine leakage finding and leakage checking packer

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WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20150325