CN201443306U

CN201443306U - Lengthening and reinforced oil pipe cross-over joint

Info

Publication number: CN201443306U
Application number: CN2009200137136U
Authority: CN
Inventors: 赵广友; 马相君; 周国宁
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-05-15
Filing date: 2009-05-15
Publication date: 2010-04-28
Anticipated expiration: 2019-05-15

Abstract

The utility model discloses a lengthening and reinforced oil pipe cross-over joint for connecting oil pipes in the exploitation of oil fields. The lengthening and reinforced oil pipe cross-over joint comprises heavy caliber section treads, a heavy caliber lengthening section, a cross-over joint body, a marking groove, a small caliber lengthening section, and small caliber section threads; round steel is forged into the cross-over joint body; the heavy caliber section and the small caliber section of the cross-over joint body can be enlightened into the heavy caliber lengthening section and the small caliber lengthening section as required; the marking groove is arranged in the middle of the oil pipe cross-over joint, and the heavy caliber section treads and the small caliber section threads are respectively processed on the cross-over joint body. The utility model solves the problem that the prior art has poor mechanical property and quality of the oil pipe cross-over joint and thread damage beyond repair and high cost. The utility model can be widely applied to the operation of oil pipe connection in the exploitation of oil fields.

Description

The reinforced oil pipe of a kind of lengthening becomes to be buckled

Technical field:

The utility model relates to the reinforced oil pipe change of a kind of lengthening of oil pipe connection usefulness in a kind of oilfield exploitation and buckles.

Background technology:

The oil pipe that uses in the oilfield exploitation all is the oil pipe of the form of being threaded at present, this connection is called the oil pipe change and buckles (box cupling or change snapping head) parts, oil pipe becomes that to buckle be important component part in the oil tubing string, it is the steel pipe than the big specification of original oil pipe, processes interior (or outer) screw thread that can be threaded with outer (or interior) of oil pipe (or box cupling) end processing on its inwall (or outer wall).Common thick walled steel tube or the round steel of adopting buckled in the oil pipe change of domestic production at present, becomes short oil pipe change through the saw weak point and buckles semiproduct, carries out screw thread processing then, and this oil pipe becomes the shortcoming of buckleing and is: the cost height, and stock utilization is low; The specification of producing is limited, and it is longer to change the different size time, and the wall thickness accuracy of steel pipe is lower, and wall thickness deflection is bigger, and the surplus behind the processed finished products is bigger, and mechanism performance is poor, and in use being prone to the screw buckle damage can't repair; Tubing thread manufacturer is many, and quality is fixing, and the oil pipe change is buckled specification and is unfavorable for keeping more, product quality problem inconvenience occurs and traces.

The utility model content:

The purpose of this utility model is to provide the reinforced oil pipe of a kind of lengthening to become and buckle, and this oil pipe becomes buckle and solved the oil pipe change deduction tool performance that exists in the prior art, of poor quality, and screw thread damages can't the high problem of rehabilitation cost.

The technical scheme that its technical problem that solves the utility model adopts is: the reinforced oil pipe of a kind of lengthening becomes to be buckled, and is made up of heavy caliber section screw thread, heavy caliber lengthening section, change button main body, labeled slots, small-bore lengthening section, small-bore section screw thread; Round steel is made change button main body through forging molding, and this main body can become the large and small bore section lengthening of button main body as required; Make heavy caliber lengthening section and small-bore lengthening section, become the middle part of buckleing at oil pipe and be provided with labeled slots; And become at oil pipe and to buckle main body and be processed into heavy caliber section screw thread and small-bore section screw thread respectively.

The beneficial effects of the utility model are: simple in structure, fabrication cycle is short, and cost is low; The oil pipe that adopts forging molding to make becomes buckles the intensity height; The mechanical performance height, the quality height; Because being provided with elongated portion, the two ends that the oil pipe change is buckled two ends can be had the part of damage to remove still and can use again; Become to buckle at oil pipe and be provided with labeled slots and can review product quality.

Description of drawings:

Accompanying drawing is the utility model overall structure schematic diagram.

Among the figure, 1, heavy caliber section screw thread, 2, the heavy caliber lengthening section, 3, become the button main body, 4, labeled slots, 5, small-bore lengthening section, 6, small-bore section screw thread.

The specific embodiment:

As shown in the figure: the reinforced oil pipe of a kind of lengthening becomes to be buckled, and is made up of heavy caliber section screw thread 1, heavy caliber lengthening section 2, change button main body 3, labeled slots 4, small-bore lengthening section 5, small-bore section screw thread 6; Round steel is made change button main body 3 through forging molding, and this main body can become the large and small bore section lengthening of button main body 3 as required; Make heavy caliber lengthening section 2 and small-bore lengthening section 5, become that middle part buckle is provided with labeled slots 4 and buckle at oil pipe and be processed into heavy caliber section screw thread 1 and small-bore section screw thread 6 on the main body 3 respectively in change.

Claims

1. the reinforced oil pipe change of lengthening is buckled, and is made up of heavy caliber section screw thread (1), heavy caliber lengthening section (2), change button main body (3), labeled slots (4), small-bore lengthening section (5), small-bore section screw thread (6); It is characterized in that: round steel is made to become through forging molding detain main body (3), this main body can become the large and small bore section lengthening of button main body (3) as required; Make heavy caliber lengthening section (2) and small-bore lengthening section (5), become that middle part buckle is provided with labeled slots (4) and buckle at oil pipe and be processed into heavy caliber section screw thread (1) and small-bore section screw thread (6) on the main body (3) respectively in change.