CN210317291U

CN210317291U - Bushing and restriction ring integrated circulating sleeve for wireless drilling inclinometer

Info

Publication number: CN210317291U
Application number: CN201920740102.5U
Authority: CN
Inventors: 黄文静
Original assignee: Chengdu Guider Petroleum Technology Co Ltd
Current assignee: Chengdu Guider Petroleum Technology Co Ltd
Priority date: 2019-05-22
Filing date: 2019-05-22
Publication date: 2020-04-14
Anticipated expiration: 2029-05-22

Abstract

The utility model relates to a wireless circulation cover for inclinometer along with boring of bush and restriction ring integration can avoid the problem that the restriction ring dropped because of the snap ring is eroded when drilling. The problem that the flow-limiting ring cannot be taken out due to the fact that the clamping ring is deformed when the flow-limiting ring is replaced is also solved. The utility model adopts the technical proposal that: after the composite bushing is installed into the circulating sleeve body, the locking sleeve is connected with the circulating sleeve body through threads, and then the locking sleeve is tightened through the blind pin hole. The inner diameter of the step of the locking sleeve is smaller than the inner diameter of the lining, so that the lining can be blocked and cannot fall off. The outer wall of the circulating sleeve is provided with a jackscrew, and the composite bushing is fixed in the circulating sleeve body. The orientation key is fixed with the circulating sleeve body through a pin. The locking sleeve has thicker steps, is not easy to erode, reduces the replacement times of the composite bushing, saves the cost and improves the working efficiency.

Description

Bushing and restriction ring integrated circulating sleeve for wireless drilling inclinometer

The technical field is as follows:

the utility model relates to an oil drilling system MWD instrument deviational survey technical field, concretely relates to wireless along with boring circulation cover for inclinometer of bush and restriction ring integration.

Background art:

with the development of the drilling industry, the utilization rate of a wireless inclinometer while drilling (MWD) is higher and higher. The circulating jacket plays a crucial role as a component in MWD products that generates a pressure signal. The circulating sleeve is arranged in the directional short section and is positioned in a matched manner with the guide bevel. The flow-limiting ring on the circulating sleeve is matched with the servo valve head on the pulser to generate a pressure signal. The original circulating sleeve adopts a double-snap ring design, the bottom of the original circulating sleeve cannot be disassembled, firstly, the lining is installed from the lower part of the circulating sleeve, and the snap ring is installed to fix the lining; then the flow-limiting ring is installed from the lower part of the circulating sleeve, and the snap ring is installed to fix the flow-limiting ring. With the change of the conditions of the depth, the mud density, the flow rate and the like of the drilled well, the flow-limiting ring on the circulating sleeve needs to be replaced frequently to ensure that the signal intensity is within the resolution range of a receiving instrument. However, the clamping ring is thin, the slurry scours the front surface of the circulating sleeve, the clamping ring is eroded to a certain degree, if the clamping ring of the flow-limiting ring is damaged, the flow-limiting ring sinks, the relative position of the inclined main valve head and the flow-limiting ring is changed, an underground signal is weakened or no signal is generated, the eroded clamping ring is difficult to take out of the circulating sleeve, the lining and the flow-limiting ring are difficult to take out, the loss cost of the clamping ring is high, and the flow-limiting ring is difficult to replace.

The invention content is as follows:

in order to overcome the serious problem that the inside snap ring of current circulation cover erodees and the restrictor ring drops, the utility model provides a novel circulation cover need not use the snap ring just can fix bush and restrictor ring, has avoided the risk that the snap ring was eroded in the circulation cover. The bottom of the circulating sleeve is detachable. On the basis, the bushing and the flow-limiting ring are integrated to form the composite bushing, so that the bushing and the flow-limiting ring are not needed any more and only the composite bushing is needed when the composite bushing is used. The flow-limiting ring is prevented from falling off, and the step of installing the flow-limiting ring is omitted.

The utility model provides a technical scheme that its technical problem adopted is: a circulating sleeve for a bushing and restriction ring integrated wireless inclinometer while drilling is composed of a circulating sleeve body, a locking sleeve, a composite bushing, a jackscrew, an orientation key and a pin. After the composite bushing is installed into the circulating sleeve body, the locking sleeve is connected with the circulating sleeve body through threads, and then the locking sleeve is tightened through the blind pin hole. The inner diameter of the step of the locking sleeve is smaller than the inner diameter of the lining, so that the lining can be blocked and cannot fall off. The outer wall of the circulating sleeve is provided with a jackscrew, and the composite bushing is fixed in the circulating sleeve body. The orientation key is fixed with the circulating sleeve body through a pin. The step of lock sleeve is thick, is difficult for being erodeed to the problem that the restrictor ring drops because the snap ring is erodeed when having solved the well drilling. The problem that the flow-limiting ring cannot be taken out due to the fact that the clamping ring is deformed when the flow-limiting ring is replaced is also solved.

The beneficial results of the utility model are that, the circulation cover main part accessible screw thread is connected or is dismantled with the lock sleeve to pack into or take off compound bush. The step of lock sleeve is difficult to be erodeed, can guarantee that composite bush does not drop, has improved the signal strength of instrument, reduces and changes the restrictor ring number of times, has improved the production ageing of instrument greatly. The design that base detachable design, bush and restrictor ring integration are simple reasonable, easy to assemble and dismantle compound bush. Meanwhile, a snap ring is not used, and the cost is saved.

Drawings

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

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a half-sectional view of the circulating jacket body of the present invention.

FIG. 3 is a three-dimensional view of the circulating jacket body of the present invention

Fig. 4 is a half-sectional view of the locking sleeve of the present invention.

Figure 5 is a three-dimensional view of the locking sleeve of the utility model

Fig. 6 is a schematic view of the structure of the bushing of the present invention.

Fig. 7 is a three-dimensional view of the bushing of the present invention.

Fig. 8 is a schematic view of the structure of the directional key and the pin of the present invention.

In the figure, 1 is an orientation key, 2 is a circulating sleeve body, 3 is a jackscrew, 4 is a dowel hole, 5 is a locking sleeve, 6 is a circulating sleeve body internal thread, 7 is a locking sleeve external thread, 8 is a dowel hole, 9 is a locking sleeve step, 10 is a composite bushing, 11 is a jackscrew groove, 12 is a pin。

Detailed Description

As shown in fig. 1 to 8, the circulating sleeve for the wireless drilling inclinometer with the integrated bushing and the restrictor ring is characterized by comprising a circulating sleeve body 2, a locking sleeve 5, a composite bushing 10, a jackscrew 3, an orientation key 1 and a pin 12, wherein the composite bushing 10 is installed from the bottom of the circulating sleeve body 2, the locking sleeve 5 is connected with the circulating sleeve body 2 through a thread, the composite bushing 10 and the circulating sleeve body 2 are fixed through the jackscrew, the circulating sleeve body 2 and the orientation key 1 are fixedly connected through the pin 12, the composite bushing 10 is the composite bushing 10 with the integrated bushing and restrictor ring, and the flow rate of slurry can be changed by replacing the composite bushings 10 with different sizes during construction.

The composite bushing 10 is externally provided with a circle of jackscrew grooves 11, and when the composite bushing 10 is installed in the circulating sleeve body 2, jackscrews are inserted into the circulating sleeve body 2 from the outside to clamp the jackscrew grooves 11 of the composite bushing 10, so that the composite bushing 10 is fixed with the circulating sleeve body 2.

After the locking sleeve 5 is connected with the circulating sleeve body 2 through threads, the locking sleeve 5 is tightened through the blind pin hole 4.

After the composite bushing 10 is pushed into the bottom of the circulating sleeve body 2 as shown in fig. 2, the internal thread 6 of the circulating sleeve body is connected with the external thread 7 of the locking sleeve, so that the locking sleeve 5 is installed on the circulating sleeve body 12And at the bottom, the locking sleeve 4 is tightened through four dowel holes 8 of the locking sleeve 5. At the moment, the locking sleeve step 9 blocks the composite bushing 10 to prevent the composite bushing 10 from falling off. Four jackscrews 3 are arranged on the circulating sleeve body 2 and are propped against the composite bushing 10, so that the composite bushing 10 is firmly fixed. Finally, the directional key 1 is fixed with the circulating sleeve body 2 through a pin 12. Jackscrew3The disassembly from the locking sleeve 5 is simple, so that the composite bushing 10 is convenient to replace. Through the structure, the phenomenon that the flow-limiting ring falls down or cannot be replaced due to erosion of the clamping ring is completely avoided.

Claims

1. The utility model provides a lining and restrictor ring integrated wireless circulation cover for inclinometer of following boring, characterized by comprises circulation cover body (2), lock sleeve (5), composite bushing (10), jackscrew (3), directional key (1), pin (12), and composite bushing (10) are packed into from circulation cover body (2) bottom, and lock sleeve (5) are connected through screw and circulation cover body (2), fixes composite bushing (10) and circulation cover body (2) with the jackscrew, and circulation cover body (2) are connected fixedly through pin (12) with directional key (1).

2. The circulating sleeve for the wireless inclinometer while drilling with the integrated bushing and restrictor ring as claimed in claim 1, wherein: the composite bushing (10) is designed into the composite bushing (10) with the bushing and the flow limiting ring integrated, and the mud flow can be changed by replacing the composite bushings (10) with different sizes during construction.

3. The circulating sleeve for the wireless inclinometer while drilling with the integrated bushing and restrictor ring as claimed in claim 1, wherein: the composite bushing (10) is externally provided with a ring of jackscrew grooves (11), when the composite bushing (10) is installed in the circulating sleeve body (2), jackscrews are inserted into the circulating sleeve body (2) from the outside to clamp the jackscrew grooves (11) of the composite bushing (10), and therefore the composite bushing (10) is fixed with the circulating sleeve body (2).

4. The circulating sleeve for the wireless inclinometer while drilling with the integrated bushing and restrictor ring as claimed in claim 1, wherein: the locking sleeve (5) is tightly screwed through the blind pin hole (4) after being connected with the circulating sleeve body (2) through threads.