CN202441301U - Drilling tool fishing device for special-shaped borehole - Google Patents

Drilling tool fishing device for special-shaped borehole Download PDF

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Publication number
CN202441301U
CN202441301U CN2011204961264U CN201120496126U CN202441301U CN 202441301 U CN202441301 U CN 202441301U CN 2011204961264 U CN2011204961264 U CN 2011204961264U CN 201120496126 U CN201120496126 U CN 201120496126U CN 202441301 U CN202441301 U CN 202441301U
Authority
CN
China
Prior art keywords
fish
make
special
drilling tool
wall hook
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.)
Expired - Lifetime
Application number
CN2011204961264U
Other languages
Chinese (zh)
Inventor
吴凯彬
干建华
彭碧强
何兵
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.)
West Sichuan Drilling Co of CNPC Chuanqing Drilling Engineering Co Ltd
Original Assignee
West Sichuan Drilling Co of CNPC Chuanqing Drilling Engineering 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 West Sichuan Drilling Co of CNPC Chuanqing Drilling Engineering Co Ltd filed Critical West Sichuan Drilling Co of CNPC Chuanqing Drilling Engineering Co Ltd
Priority to CN2011204961264U priority Critical patent/CN202441301U/en
Application granted granted Critical
Publication of CN202441301U publication Critical patent/CN202441301U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model discloses a drilling tool fishing device for a special-shaped borehole, which comprises a make-up connector, a lengthening cylinder and a wall hook. The make-up connector is arranged at an upper section and can be processed according to the box of a fish that needs to be fished or the box of a cooperated tool. The lengthening cylinder is arranged at a middle section, and two ends of the lengthening cylinder, i.e. a box and a pin, are the same in shape. The wall hook is arranged at a lower section. The three sections are connected by screw threads. When a fish top of a fish is at a big belly part of an oil and gas well or is tightly attached to a borehole wall, the drilling tool fishing device can pull out the fish in a make-up way or a false-threading way, so that the fish top can be pulled out timely and effectively and the well-drilling work can be recovered in real time, thereby reducing property loss.

Description

A kind of dart to special-shaped well
Technical field
The utility model relates to the oil/gas drilling technical field, is specifically related to a kind of dart to special-shaped well.
Background technology
In the drilling process of oil gas well usually can run into the well that breaks because of the fatigue of drilling tool, or cause drilling tool collapse to be deducted in the well because of down-hole bit bouncing and misoperation.Along with the continuous development of drilling technology, directional well, horizontal well are more and more, and the situation that well slough forms out-of-round oversized hole is difficult to avoid, and drilling tool accident the back takes place forms the possibility that the drilling tool top of fish keeps to the side to get into special-shaped well and also increase.When top of fish is positioned at " pregnant " position or top of fish is close to the borehole wall, bring very big difficulty to salvage.Adopt single wall hook to stir the back and pull out of hole, when being lowered to fishing tool often fish restore to the original state again, even adopt conventional fishing tool successfully to salvage, and cause filling out the well sidetracking, lose huge.
The utility model content
To above-mentioned prior art, the technical problem that the utility model will solve is: when pregnant position or the top of fish that is positioned at the oil gas well when the fish top of fish was close to the borehole wall, general fisher can't in time be salvaged even can't salvage top of fish.
In order to solve the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of dart to special-shaped well is provided, it is characterized in that, comprise make-up joint, lengthening tube, wall hook; Top is divided into the make-up joint, can process according to box of required salvaging fish or the instrument box that is cooperated; Mid portion is the lengthening tube, and lengthening tube two ends one a public box type is identical; The bottom is divided into wall hook, and three parts connect with screw thread.
In the utility model, when using the make-up mode to salvage, removable lengthening tube directly links to each other with screw thread with wall hook with the make-up joint.
In the utility model, when using the cooperation of die nipple or female coupling tap to carry out fishing, connect die nipple or female coupling tap earlier, connect lengthening tube, wall hook then.
Compared with prior art, the beneficial effect of the utility model shows:
When pregnant position or the top of fish that is positioned at the oil gas well when the fish top of fish is close to the borehole wall, uses the utility model can take make-up mode or thread making mode to rise and grow, can salvage top of fish effectively in time, drilling well work is in time recovered, the minimizing property loss.
Description of drawings
Fig. 1 is the structural representation of the utility model;
1 is that make-up joint, 2 is that lengthening tube, 3 is wall hook among the figure.
The specific embodiment
To combine the accompanying drawing and the specific embodiment that the utility model is done further to describe below.
A kind of dart to special-shaped well comprises make-up joint 1, lengthening tube 2, wall hook 3; Top is divided into the make-up joint, can process according to box of required salvaging fish or the instrument box that is cooperated; Mid portion is the lengthening tube, and lengthening tube two ends one a public box type is identical; The bottom is divided into wall hook, and three parts connect with screw thread.
Embodiment one
The utility model is made up of make-up joint and wall hook two parts.Adopt the make-up mode to salvage fish, use screw thread only with the make-up joint with after wall hook is connected, go into the down-hole and go into top of fish and slowly transfer and stir drilling tool; Repeatable operation until the fish head is introduced in the fishing socket, is transferred drilling tool then and is carried out make-up; Make-up success, on carry drilling tool, trip out fish.
Practical example two
The utility model is made up of make-up joint, the tube that extends, wall hook three parts, salvages fish when needing to use die nipple or female coupling tap cooperation to carry out fishing, connects die nipple or female coupling tap earlier; Connect lengthening tube, wall hook then, be lowered to top of fish and slowly transfer and stir drilling tool, repeatable operation; Until the fish head is introduced in the fishing socket, transfer drilling tool then and carry out thread making, the thread making success; On carry drilling tool, trip out fish.Behind engaging fish, but fish blocked, and can not trip out fish, can more than carry drilling tool, regulate the point of neutralization and take the back-off mode to change the top of fish structure, trip out this fisher, take the transaction card drill method to handle.

Claims (3)

1. the dart to special-shaped well is characterized in that, comprises make-up joint, lengthening tube, wall hook; Top is divided into the make-up joint; Mid portion is the lengthening tube, and lengthening tube two ends one a public box type is identical; The bottom is divided into wall hook, and three parts connect with screw thread.
2. the dart to special-shaped well according to claim 1 is characterized in that, when using the make-up mode to salvage, removable lengthening tube directly links to each other with screw thread with wall hook with the make-up joint.
3. the dart to special-shaped well according to claim 1 is characterized in that, when using the cooperation of die nipple or female coupling tap to carry out fishing, connects die nipple or female coupling tap earlier, connects lengthening tube, wall hook then.
CN2011204961264U 2011-12-03 2011-12-03 Drilling tool fishing device for special-shaped borehole Expired - Lifetime CN202441301U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011204961264U CN202441301U (en) 2011-12-03 2011-12-03 Drilling tool fishing device for special-shaped borehole

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011204961264U CN202441301U (en) 2011-12-03 2011-12-03 Drilling tool fishing device for special-shaped borehole

Publications (1)

Publication Number Publication Date
CN202441301U true CN202441301U (en) 2012-09-19

Family

ID=46822754

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011204961264U Expired - Lifetime CN202441301U (en) 2011-12-03 2011-12-03 Drilling tool fishing device for special-shaped borehole

Country Status (1)

Country Link
CN (1) CN202441301U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104712282A (en) * 2014-12-19 2015-06-17 中煤科工集团重庆研究院有限公司 Coalbed methane ground well slender rod fisher

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104712282A (en) * 2014-12-19 2015-06-17 中煤科工集团重庆研究院有限公司 Coalbed methane ground well slender rod fisher

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C14 Grant of patent or utility model
GR01 Patent grant
CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20120919