CN202348143U

CN202348143U - Novel drill rod joint thread

Info

Publication number: CN202348143U
Application number: CN2011205408038U
Authority: CN
Inventors: 杜林�; 杨翠; 薛学军; 王锦凤; 孙文燕; 李振芳
Original assignee: SHANDONG MINGZHU PETROLEUM EQUIPMENT CO Ltd
Current assignee: SHANDONG MINGZHU PETROLEUM EQUIPMENT CO Ltd
Priority date: 2011-12-15
Filing date: 2011-12-15
Publication date: 2012-07-25
Anticipated expiration: 2021-12-15

Abstract

The utility model relates to a novel drill rod joint thread. The technical scheme adopted by the utility model is as follows: the novel drill rod joint thread comprises joint bodies; the upper ends of the joint bodies are provided with internal threads; the lower ends of the joint bodies are provided with external threads; and thread parameters, such as thread pitch and tooth height, of the internal threads and the external threads are increased to 1.2-1.3 times that of a standard thread by the same proportion according to the thread with the thread profile of V-0.038 and the taper of 1/6 in the API 7-2 standard, the taper and an included angle of thread are unchanged, and the numbers of the thread teeth of the internal threads and the external threads can be appropriately reduced or unchanged. Compared with the prior art, the novel drill rod joint thread has the advantages of simple structure, convenience in operation, and effectiveness in the decrease or avoidance of thread gluing phenomenon, the screwing-on is easy, and the service life is long, so that the novel drill rod joint thread can be conveniently and widely applied to the field of oil and natural gas drilling and the trenchless field.

Description

A kind of novel tool joint thread

One, technical field

The utility model relates to the drilling rod of oil and gas well drilling and non-excavation horizontal orientation crossing construction, is a kind of novel tool joint thread concretely.

Two, background technology

At present, in oilfield drilling and non-excavating construction process, the screw thread that big specification drilling rod adopts in the conventional API standard is the 51/2FH screw thread especially; In use frequent appearance screw thread thread gluing phenomenon; Screw thread is in last button process, and particularly in the non-excavating construction process, the drill pipe box of last button and male connection axis coaxle degree are difficult to accurate control; Under the situation that torque wrench moment is bigger relatively, the as easy as rolling off a log generation thread alternating of screw thread causes gross distortion.This type of thread failure phenomenon is particularly evident in non-excavation market manifestation, brings bigger economic loss to the user, influences efficiency of construction.

Three, utility model content

The purpose of the utility model is exactly the defective that exists to prior art, provide a kind of simple in structure, easy to operate, effectively prevent that a kind of novel tool joint thread of thread alternating thread gluing from appearring in screw thread.

Its technical scheme is: comprise joint body; The joint body two ends are respectively equipped with internal thread and external screw thread; The thread parameter of fillet, thread taper is that 1/6 screw thread increases to 1.2～1.3 times of standard threads in proportion according to form of thread in the API 7-2 standard for the V-0.038 tapering at the bottom of internal thread and externally threaded pitch, tooth depth, crest fillet, the included angle of thread, crest plane width, the tooth, and wherein the tapering and the included angle of thread are constant.

The utility model compared with prior art, have simple in structure, easy to operate, effectively reduce or avoid the advantage of screw thread thread gluing phenomenon, and be easy to button, long service life, be convenient in oil, gas drilling and the field extensive use of non-excavation.

Four, description of drawings

Fig. 1 is the structural representation of a kind of embodiment of the utility model;

Fig. 2 is the utility model A portion structure enlarged diagram.

Five, the specific embodiment

See figures.1.and.2; A kind of novel tool joint thread; Comprise joint body 1 and joint body 2; Joint body 1 is respectively equipped with internal thread 3 and external screw thread 4 with joint body 2 two ends; The thread parameter of fillet 10, thread taper 11 is that 1/6 screw thread increases to 1.2～1.3 times of standard threads in proportion according to form of thread in the API 7-2 standard for the V-0.038 tapering at the bottom of the pitch 5 of internal thread 3 and external screw thread 4, tooth depth 6, crest fillet 7, the included angle of thread 8, crest plane width 9, the tooth, and wherein tapering 11 is constant with the included angle of thread 8.External screw thread 4 is complementary with internal thread 3 thread parameters, and internal and

external threads

3 and 4 ridge numbers can suitably reduce or be constant.

Internal and

external threads

3 and 4 is in last button process, because the thread parameter of pitch 5, tooth depth 6 and crest fillet 7 increases internal and

external threads

3 and 4 engagement fully more easily in the last button process, the gross distortion that effectively reduces or avoid thread alternating to cause.

Claims

1. novel tool joint thread; Comprise joint body; It is characterized in that: the joint body two ends are respectively equipped with internal thread and external screw thread; The thread parameter of fillet, thread taper is that 1/6 screw thread increases to 1.2～1.3 times of standard threads in proportion according to form of thread in the API 7-2 standard for the V-0.038 tapering at the bottom of internal thread and externally threaded pitch, tooth depth, crest fillet, the included angle of thread, crest plane width, the tooth, and wherein the tapering and the included angle of thread are constant.