Protection tool for magnetic field gradient probe of non-magnetic drilling tool

Abstract

The utility model relates to a protection tool for a magnetic field gradient probe of a non-magnetic drilling tool, which is characterized in that two semi-cylinders are combined into a cylinder, a cuboid space is processed in the cylinder, the shape of the cuboid space is consistent with that of the magnetic field gradient probe of the non-magnetic drilling tool, and a through hole is processed between the cuboid space and the end face of the cylinder and is used for placing a probe wire. A diameter inner threaded hole is machined in one end of a cylinder and matched with an outer thread on a probe rod head, an inner threaded hole of the size specification M6 is formed in the position, 55 mm away from the end face, of the cylinder, two inner threaded holes of the size specification M6 are formed in the position, 20 mm away from the other end face, of the cylinder, and an inner threaded through hole of the size specification M12 is machined. The two semi-cylinders are combined into a cylinder through countersunk copper screws with the size specification of M6, probe supporting bolts are installed in internal thread through holes with the size specification of M12, before testing, the non-magnetic drilling tool magnetic field gradient probe is packaged in the protection tool, and the probe can be effectively protected by assembling the tool and a horizontal probe rod.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the magnetic property detection technical field of non-magnetic drilling tool, and specifically relates to a non-magnetic drilling tool magnetic field gradient probe protection tool capable of effectively protecting a probe. BACKGROUND

[0002] According to the magnetic property testing device stipulated in Clause 6.4.2 of the SY / T 5144-2013 Chinese Petroleum and Natural Gas Industry Standard - Drill Collar Standard, the maximum deviation of a C-shaped drill collar from a uniform magnetic field is not more than ±0.05 muT, the drilling tool is placed in the north-south direction, the probe is not moved, the south-north movement of the measured drill collar causes the probe to measure the magnetic field gradient Delta B value of any 100mm apart. According to the patent No. ZL2012 2 0453188.1, a non-magnetic drill stand magnetic field gradient measuring device is obtained by a horizontal probe rod and a vertical fixed support, the measuring probe can be inserted into the inner hole of the non-magnetic drill collar, and the magnetic field gradient Delta B value of any 100mm apart is measured. In the actual testing process, the length of the non-magnetic drilling tool is different, ranging from 300mm to 10m, the non-magnetic drilling tool magnetic field gradient probe lacks a protection tool, the probe and the inner hole wall exist collision danger, and the probe is damaged. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at overcoming the defects of the prior art that the non-magnetic drilling tool magnetic field gradient probe collides with the inner hole wall in the non-magnetic drilling tool testing process, causing the probe to be damaged, and provides a non-magnetic drilling tool magnetic field gradient probe protection tool.

[0004] In order to achieve the above object, the utility model adopts the following technical scheme: a non-magnetic drilling tool magnetic field gradient probe protection tool, the non-magnetic drilling tool magnetic field gradient probe protection tool is made of two semicylinders and is combined into a cylinder, the material adopts nylon material, the diameter of the cylinder is less than the inner hole specification size of the non-magnetic drilling tool to be measured, a space consistent with the shape of the non-magnetic drilling tool magnetic field gradient probe is processed in the cylinder, the non-magnetic drilling tool magnetic field gradient probe is embedded in the space, a through hole for arranging the probe line is processed between the space and one end face of the cylinder, an internal thread hole matched with the external thread size on the head of the probe rod is processed on the other end face of the cylinder, one internal thread hole is formed on the cylindrical surface of the cylinder away from the end face, two internal thread holes are formed on the cylindrical surface of the cylinder away from the other end face, the two semicylinders are combined into a cylinder through the three internal thread holes and the countersunk head screw, and one internal thread through hole is also formed on the cylindrical surface of the cylinder away from the other end face, and the probe support bolt is installed in the internal thread through hole.

[0005] A space which is consistent with the shape of the non-magnetic drilling tool magnetic field gradient probe is processed in the cylinder, the length of the cylinder is 375mm, the space is a cuboid space which is processed in the cylinder, the specific size is 240mm*36mm*36mm, the size is consistent with the shape of the non-magnetic drilling tool magnetic field gradient probe, and the non-magnetic drilling tool magnetic field gradient probe is embedded in the space.

[0006] An internal thread hole which is matched with the size of the external thread on the probe rod head is processed on the other end surface of the cylinder, and the internal thread hole is a 30mm diameter internal thread hole. The front section of the protective tool is provided with the internal thread hole, is assembled with the probe rod, and the non-magnetic drilling tool magnetic field gradient test of different size specifications is completed.

[0007] A through hole with a diameter of 32mm and a depth of 30mm for arranging the probe wire is processed between the cuboid space and one end surface of the cylinder.

[0008] One internal thread hole is arranged on the cylindrical surface of the cylinder away from one end surface of the cylinder, and two internal thread holes are arranged on the cylindrical surface of the cylinder away from the other end surface of the cylinder, and the size of the internal thread hole is an M6 internal thread hole.

[0009] One internal thread hole is further arranged on the cylindrical surface of the cylinder away from the other end surface of the cylinder, and the size of the internal thread hole is an M12 internal thread hole.

[0010] The utility model has the following beneficial effects: before the non-magnetic drilling tool magnetic field gradient test, the non-magnetic drilling tool magnetic field gradient probe is packaged in the protective tool, the tool is assembled with the horizontal probe rod, and then the non-magnetic drilling tool magnetic field gradient test is carried out according to the clause 6.4.2 of SY / T 5144-2013. The non-magnetic drilling tool magnetic field gradient probe protective tool is made of non-magnetic material, the tool is assembled with the horizontal probe rod, and the non-magnetic drilling tool internal hole magnetic field gradient test of different size specifications is completed. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the structure front view of the utility model.

[0012] Figure 2 It is the protective tool A-A sectional view.

[0013] Figure 3 It is the structure sectional view of the utility model.

[0014] In the drawing, 1 is a cylinder, 2 is a magnetic field gradient probe, 3 is an internal thread hole, 4 is an M6 countersunk screw, and 5 is an M12 internal thread. DETAILED DESCRIPTION

[0015] As Figure 1 , 2As shown in FIGS. 1-3, a magnetic drill tool magnetic field gradient probe protection tool is formed by two half cylinders being combined into a cylinder 1, the material is nylon, the diameter of the cylinder 1 is smaller than the inner hole size of the magnetic drill tool to be measured, a space consistent with the shape of the magnetic drill tool magnetic field gradient probe 2 is processed in the cylinder 1, the magnetic drill tool magnetic field gradient probe 2 is embedded in the space, a through hole for arranging the probe line is processed between the space and one end face of the cylinder 1, an internal thread hole 3 matched with the external thread size on the probe rod head is processed on the other end face of the cylinder 1, and one internal thread hole 3 is opened on the cylindrical surface of the cylinder away from the end face, two internal thread holes 3 are opened on the cylindrical surface of the cylinder away from the other end face of the cylinder 1, the two half cylinders are combined into a cylinder 1 through the three internal thread holes 3 and M6 countersunk head screws 4, and one internal thread through hole 5 is also opened on the cylindrical surface of the cylinder away from the other end face of the cylinder 1, and the probe support bolt is installed in the internal thread through hole 5.

[0016] A space consistent with the shape of the magnetic drill tool magnetic field gradient probe 2 is processed in the cylinder 1, the length of the cylinder 1 is 375 mm, the space is a cuboid space processed in the cylinder 1, the specific size is 240 mm x 36 mm x 36 mm, the size is consistent with the shape of the magnetic drill tool magnetic field gradient probe 2, and the magnetic drill tool magnetic field gradient probe 2 is embedded in the space.

[0017] An internal thread hole 3 matched with the external thread size on the probe rod head is processed on the other end face of the cylinder 1, and the internal thread hole 3 is a 30 mm diameter internal thread hole.

[0018] The diameter of the through hole for arranging the probe line processed between the cuboid space and one end face of the cylinder 1 is 32 mm, and the depth is 30 mm.

[0019] One internal thread hole 3 is opened on the cylindrical surface of the cylinder away from one end face of the cylinder, and two internal thread holes 3 are opened on the cylindrical surface of the cylinder away from the other end face of the cylinder 1, and the size of the internal thread hole 3 is an M6 internal thread hole.

[0020] One internal thread through hole 5 is also opened on the cylindrical surface of the cylinder away from the other end face of the cylinder 1, and the size of the internal thread through hole 5 is an M12 internal thread through hole.

[0021] A non-magnetic drilling tool magnetic field gradient probe protection tool, the non-magnetic drilling tool magnetic field gradient probe protection tool is assembled into a cylinder 1 by two half cylinders, the cylinder diameter is less than the non-magnetic drilling tool hole specification size to be measured, the cylinder length is 375 mm, a cuboid space 240 mm x 36 mm x 36 mm is processed in the cylinder, the size is consistent with the non-magnetic drilling tool magnetic field gradient probe 2 appearance, the cuboid space to the cylinder end face is processed a through hole diameter 32 mm, used for arranging probe line. A diameter 30 mm internal thread hole 3 is processed at one end of the cylinder, the size is matched with the external thread size on the probe rod head, the depth is 30 mm. A diameter 30 mm internal thread hole is processed at one end of the cylinder, the size is matched with the external thread size on the probe rod head, another M6 size internal thread hole 3 is arranged on the cylinder at 55 mm from the end face, two M6 size internal thread holes 3 are arranged at 20 mm from the other end face of the cylinder, another M12 size internal thread through hole 5 is processed, the three internal thread holes 3 can be used to assemble the two half cylinders into a cylinder by M6 countersunk head copper screw, the M12 size internal thread through hole is used to install probe support screw. Another M12 size internal thread through hole 5 is processed, the three internal thread holes can be used to assemble the two half cylinders into a cylinder by M6 countersunk head copper screw, the M12 size internal thread through hole is used to install probe support bolt, to stabilize the probe.

[0022] Before the non-magnetic drilling tool magnetic field gradient test, the non-magnetic drilling tool magnetic field gradient probe is packaged in the protection tool, and then the non-magnetic drilling tool magnetic field gradient is tested according to the clause 6.4.2 of SY / T 5144-2013.

Claims

1. A non-magnetic drilling tool magnetic field gradient probe protection tool, the non-magnetic drilling tool magnetic field gradient probe protection tool is composed of two half cylinders assembled into a cylinder (1), the material is nylon, characterized in that: The diameter of the cylinder (1) is smaller than the inner hole size of the non-magnetic drilling tool to be measured. A space with the same shape as the non-magnetic drilling tool magnetic field gradient probe (2) is machined in the cylinder (1). The non-magnetic drilling tool magnetic field gradient probe (2) is embedded in the space. A through hole for placing the probe wire is machined between the space and one end face of the cylinder (1). An internal threaded hole (3) with the same size as the external thread on the probe rod head is machined on the other end face of the cylinder (1). One internal threaded hole (3) is opened on the cylindrical surface of the cylinder away from the end face. Two internal threaded holes (3) are opened on the cylindrical surface of the cylinder away from the other end face of the cylinder (1). The two half-cylinders are assembled into one cylinder (1) through the three internal threaded holes (3) and countersunk screws. One internal threaded hole (5) is also opened on the cylindrical surface of the cylinder away from the other end face of the cylinder (1). A probe support bolt is installed in the internal threaded hole (5).

2. A magnetic drill tool magnetic field gradient probe protection tool according to claim 1, characterized in that: A cuboid space is machined inside, with specific dimensions of 240mm x 36mm x 36mm. The length of the cylinder (1) is 375mm. The space is consistent with the shape of the non-magnetic drilling tool magnetic field gradient probe (2), and the non-magnetic drilling tool magnetic field gradient probe (2) is embedded in it.

3. A magnetic drill tool magnetic field gradient probe protection tool according to claim 1, characterized in that: The internal threaded hole (3) is a 30mm diameter internal threaded hole.

4. A magnetic drill tool magnetic field gradient probe protection tool according to claim 2, characterized in that: The diameter of the through hole for placing the probe wire machined between the cuboid space and one end face of the cylinder (1) is 32mm, and the depth is 30mm.

5. A magnetic drill tool magnetic field gradient probe protection tool according to claim 1, characterized in that: One internal threaded hole (3) is opened on the cylindrical surface of the cylinder away from one end face. Two internal threaded holes (3) are opened on the cylindrical surface of the cylinder away from the other end face of the cylinder (1). The size of the internal threaded hole (3) is M6 internal threaded hole.

6. A magnetic drill tool magnetic field gradient probe protection tool according to claim 1, characterized in that: One internal threaded hole (5) is also opened on the cylindrical surface of the cylinder away from the other end face of the cylinder (1). The size of the internal threaded hole (5) is M12 internal threaded hole.

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