Wellhead detection unit for drilling tool screw thread stress conditions

A detection device and thread technology, applied in the direction of force measurement, material magnetic variable, etc. by measuring the change of magnetic properties of materials caused by applied stress, can solve the problems of difficult to reach the root of the internal thread, difficult to achieve, and large wall thickness. The effect of reducing detection errors, fast detection speed and high structural strength
CN104049030AActive Publication Date: 2014-09-17PETROCHINA CO LTD
5 Cites 6 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
PETROCHINA CO LTD
Publication Date
2014-09-17

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

A wellhead detection unit for drilling tool joint screw thread stress conditions belongs to the field of nondestructive testing, and comprises a drilling tool joint screw thread detection device, a linear guide rail, a drilling tool joint outer-diameter centering mechanism, a bearing trolley, a power source and an instrument control box; the drilling tool joint outer-diameter centering mechanism comprises a positioning rod flange base, a centering shaft and a centering clamp, and the positioning rod flange base is fixed on a supporting plate, the centering clamp is fixed onto the centering shaft through a screw, the centering shaft is inserted into a stroke hole of the positioning rod flange base; the drilling tool joint screw thread wellhead detection device comprises a rib plate, a conversion block, a main shaft, a copper sleeve, a positioning pin shaft, a rotating ring, a bearing screw, a flange linear bearing, a through-wall sealing joint, a steel ring cover plate, an umbrella rod disk, an umbrella rod, a steel ring, a swing rod, a sensor seal box and a sealing joint; the wellhead detection unit for drilling tool joint screw thread stress conditions is stable in the structure, high in structural strength, abrasion resistant, fast in detection speed, high in detection precision, and capable of realizing fast and accurate screw thread detection of large scale joints.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a wellhead detection device applied to the thread stress condition of a drill tool joint. It has strong applicability to detect the internal thread from the outer wall of the drill tool joint while satisfying the detection of the external thread from the outer diameter of the drill tool joint. The high-efficiency thread stress state detection tool required for drilling use can accurately detect and evaluate the thread stress state of wellhead drill tool joints, and belongs to the field of nondestructive testing of drilling tools. Background technique

[0002] At present, one of the main manifestations of drilling tool failure is the fracture and damage of the connecting thread part. The fracture crack of the external thread joint often occurs at the root of the second or third thread from the step, and the fracture crack of the internal thread joint often occurs at the At the turnbuckle of the last part to engage. The thread p...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More