CN217453671U

CN217453671U - Clamp for orthogonal calibration of directional probe

Info

Publication number: CN217453671U
Application number: CN202221944064.3U
Authority: CN
Inventors: 夏阳; 吴俊杰; 武洪腾; 刘文峰
Original assignee: Dongying Huicui Petroleum Technology Co ltd
Current assignee: Dongying Huicui Petroleum Technology Co ltd
Priority date: 2022-07-27
Filing date: 2022-07-27
Publication date: 2022-09-20
Anticipated expiration: 2032-07-27

Abstract

The utility model relates to a directional probe orthogonal calibration clamp in the technical field of petroleum drilling engineering, which comprises an outer barrel, wherein the inner part of the outer barrel is fixedly provided with an outer barrel inner step, the inner part of the outer barrel is inserted with a lining, the outer surface of one end of the outer barrel is provided with a threaded part, one end of the outer barrel is provided with a nut, one end of the inner wall of the nut is provided with an inner thread, the inner thread is matched with the threaded part, the inner part of the nut is fixedly provided with a top ring, two ends of the lining are provided with a plurality of clearance grooves, compared with the prior art, the scheme utilizes the push of the top ring and the matching of the outer barrel inner step to extrude the lining, so that the clearance grooves on the lining shrink, the diameter of the lining is reduced, thereby the probe in the lining is clamped, and then the directional probe is tightly held, the axis of the directional probe is parallel to the axis of the outer barrel, and the operational requirement of orthogonal calibration is reached, the clamp is simple in structure, convenient to machine, low in assembly complexity and good in development prospect.

Description

Clamp for orthogonal calibration of directional probe

Technical Field

The utility model relates to an oil drilling engineering technical field especially relates to a directional anchor clamps for spy pipe quadrature calibration.

Background

At present, Measurement While Drilling (MWD) and Logging While Drilling (LWD) systems have become an indispensable part of the field of petroleum drilling engineering, and the acquisition of downhole data is more important. In geological exploration, in order to determine the inclination angle and the inclination azimuth angle of the stratum side, the inclination angle and the inclination azimuth angle of a shaft and the azimuth angle of a downhole instrument serving as a reference mark must be continuously measured, and a well path and a drill bit position need to be known when a secondary drilling or a horizontal well is drilled so as to adjust the drilling direction of the next step. Therefore, no matter after well completion or in the drilling process, high-precision continuous underground inclination measurement is necessary, the directional probe tube continuously measures the gravity field and magnetic field parameters of the underground instrument in the state, the inclination angle and the azimuth angle of the well body are calculated and transmitted to the ground instrument through temperature compensation, numerical calculation and error correction, and then the spatial position of the drilling tool is judged, so that the drilling hole can be accurately extended according to the designed track, and accidents and damages to the original underground public facilities are avoided.

In Measurement While Drilling (MWD) and Logging While Drilling (LWD) systems, 3 acceleration sensors and 3 fluxgates of a directional probe are very commonly configured, the non-orthogonality of the sensitive axes of the 3 accelerometers and the 3 fluxgates and zero full bias error are main beam sources of instrument errors, 2 methods for solving installation errors are provided, one method is correction on hardware, and the adjustment is performed as far as possible to ensure that the acceleration sensors and the fluxgates are orthogonal; the other method is to adopt a compensation method on software, even if 3 acceleration sensors and 3 fluxgate sensors are carefully calibrated, errors such as installation reasons, measurement vision and the like cannot be avoided, and deviation caused by non-orthogonality of sensitive axes cannot be avoided.

SUMMERY OF THE UTILITY MODEL

To the problem, the utility model provides an anchor clamps are used in calibration of directional spy pipe quadrature, this anchor clamps simple structure, processing is convenient, and the equipment complexity is low.

The technical scheme of the utility model is that:

the utility model provides a directional probe orthogonal calibration anchor clamps, includes the urceolus, the inside fixed mounting of urceolus has step in the urceolus, the inside of urceolus is inserted and is equipped with the inside lining, screw thread portion has been seted up to the one end surface of urceolus, the nut is installed to the one end of urceolus, the internal thread has been seted up to the inner wall one end of nut, internal thread and screw thread looks adaptation, the inside fixed mounting of nut has the apical ring, a plurality of clearance grooves have been seted up at the both ends of inside lining.

In a further technical scheme, the outer cylinder and the inner lining are both of a hollow structure, and the middle of the inner lining can be inserted with the probe tube.

In a further technical scheme, the nut is of a semi-hollow structure, and one end of the nut can be sleeved at one end of the outer barrel and connected in a threaded mode.

In a further technical scheme, the peripheral diameter of the top ring is the same as that of the inner step of the outer barrel.

The utility model has the advantages that:

compared with the prior art, the push of this scheme utilization apical ring and the cooperation extrusion inside lining of urceolus inner step for the clearance groove shrink on the inside lining lets the diameter of inside lining reduce, thereby makes the spy pipe in the inside lining carry out the centre gripping, and then holds the directional spy pipe tightly, makes the directional spy pipe axis parallel with the urceolus axis, reaches the operational requirement of quadrature calibration, and this anchor clamps simple structure, processing is convenient, and the equipment complexity is low, has fine development prospect.

Drawings

Fig. 1 is a schematic view of the overall structure of the embodiment of the present invention.

Description of reference numerals:

1. an outer cylinder; 2. a liner; 3. a nut; 4. a top ring; 5. a threaded portion; 6. an outer barrel inner step; 7. a clearance groove.

Detailed Description

The embodiments of the present invention will be further explained with reference to the drawings.

Example (b):

as shown in fig. 1, a directional probe orthogonal calibration fixture comprises an outer barrel 1, an outer barrel inner step 6 is fixedly mounted inside the outer barrel 1, a lining 2 is inserted inside the outer barrel 1, a threaded portion 5 is formed in the outer surface of one end of the outer barrel 1, a nut 3 is mounted at one end of the outer barrel 1, an inner thread is formed in one end of the inner wall of the nut 3, the inner thread is matched with the threaded portion 5, a top ring 4 is fixedly mounted inside the nut 3, a plurality of clearance grooves 7 are formed in two ends of the lining 2, and the outer barrel inner step 6 is made of a flexible material.

The working principle of the technical scheme is as follows:

the probe tube is inserted into the inner part of the lining 2, then the nut 3 is sleeved at one end of the outer barrel 1, the nut 3 can rotate and move at one end of the outer barrel 1 through the matching of the internal thread and the thread part 5, the top ring 4 is fixed on the nut 3, so that the top ring 4 is driven to move while the nut 3 moves, when the nut 3 is screwed with the outer barrel 1, the inner step 6 of the outer barrel is made of flexible material, the inner step can enter the middle position of the outer barrel 1 and the inner step 6 of the outer barrel from the notch part of the lining 2 through the notch part of the top ring 4, so that the lining 2 is extruded and deformed, the clearance groove 7 on the lining 2 is contracted, the diameter of the inner ring of the lining 2 is changed, meanwhile, the inner wall of the other end of the outer barrel 1 is provided with a blocking part, the right side of the blocking part has a certain gradient, and the lining 2 can be driven to slightly move when the top ring 4 moves, the right end of the lining 2 enters the slope position of the blocking position, the blocking position extrudes and clasps the right end of the lining 2, so that the directional probe tube is clasped and clamped, orthogonal calibration is carried out on the acceleration sensor on the directional probe tube and the sensitive shaft of the fluxgate by adopting the mode, and the measuring error is reduced.

In another embodiment, as shown in fig. 1, the outer tube 1 and the liner 2 are both hollow, and a probe can be inserted into the middle of the liner 2.

The probe tube is designed to be hollow and can be well inserted into the lining 2.

In another embodiment, as shown in fig. 1, the nut 3 is a semi-hollow structure, and one end of the nut 3 can be sleeved on one end of the outer cylinder 1 and screwed.

This arrangement allows the nut 3 to move at one end of the outer barrel 1 and to move the top ring 4.

In another embodiment, as shown in fig. 1, the outer diameter of the top ring 4 is the same as the outer diameter of the step 6 in the outer barrel.

This arrangement can be made to push one end of the top ring 4 against the outer cylinder inner step 6 well, so that the inner liner 2 is pressed together by the outer cylinder inner step 6 and the top ring 4.

The above embodiments only express the specific embodiments of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims

1. The utility model provides a directional probe orthogonal calibration anchor clamps, includes urceolus (1), its characterized in that: the inside fixed mounting of urceolus (1) has urceolus interior step (6), the inside of urceolus (1) is inserted and is equipped with inside lining (2), screw thread portion (5) have been seted up to the one end surface of urceolus (1), nut (3) are installed to the one end of urceolus (1), the inner wall one end of nut (3) is seted up there is the internal thread, internal thread and screw thread portion (5) looks adaptation, the inside fixed mounting of nut (3) has top ring (4), a plurality of clearance grooves (7) have been seted up at the both ends of inside lining (2).

2. The clamp for orthogonal calibration of the directional probe according to claim 1, wherein: the outer barrel (1) and the lining (2) are both of a hollow structure, and the probe tube can be inserted into the middle of the lining (2).

3. The clamp for orthogonal calibration of the directional probe according to claim 1, wherein: the nut (3) is of a semi-hollow structure, and one end of the nut (3) can be sleeved at one end of the outer barrel (1) and connected in a threaded mode.

4. The clamp for orthogonal calibration of the directional probe according to claim 1, wherein: the peripheral diameter of the top ring (4) is the same as that of the outer barrel inner step (6).