Tool for matching pressure consumption nipple with water hole

Abstract

The utility model discloses a tool for matching a pressure consumption short section with a water hole, which comprises a pressure consumption short section body, and a female buckle end of the pressure consumption short section body is provided with a pressure consumption short section clamping groove; a water hole bearing device body is arranged in the pressure consumption short joint body, and an upper flow channel of the water hole bearing device body is adjacent to the lower end of the pressure consumption short joint clamping groove. A water hole bearing device body clamping groove is formed in the side, close to the female buckle end of the pressure consumption nipple body, in the water hole bearing device body. A water hole body is arranged in the water hole bearing device body, and the upper end of a flow channel of the water hole body is adjacent to the lower end of a clamping groove of the water hole bearing device body. The hydraulic reamer is matched with a hydraulic reamer for use, water horsepower is effectively increased, the risk of stepped wellbore occurrence is reduced, the time for wellhead operation and tool installation and debugging is saved, the safety and stability of tool downhole operation are improved, efficient and smooth implementation of hydraulic reaming operation is guaranteed, and finally the purposes of improving well cementation quality and optimizing a well bore structure are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of downhole tools, in particular to a pressure loss sub combined with a water eye tool. Background Art

[0002] At present, in the exploration and development of offshore oil and gas, the technology of reaming while drilling has become mature, and the types of wells put into application are diverse. The large-scale and wide-depth application has greatly reduced the cost of offshore drilling operations. It is an important technical means to improve the cementing quality, enhance the drilling efficiency, and optimize the wellbore structure. The supporting force of the cutting blade of the hydraulic reamer is the key to breaking rocks. However, it is affected by the pressure difference between the upper and lower limited areas of the piston of the tool itself, and considering the limitations of drilling equipment and downhole instruments (such as the load of the mud pump, the working displacement range of the rotary steerable instrument, etc.), the strength of the blade support force will be determined by manually replacing the water eye on the tool body or the drill bit to meet the minimum working displacement of the tool. Replacing the tool or the water eye of the drill bit is time-consuming and the process is cumbersome, and there is a risk that the generated water horsepower is too large or too small to meet or even deviate from the operation requirements. To break through the current technical barriers, further improve the on-site operation efficiency, optimize the operation procedure, and increase the safety of on-site operation tools, it is urgent to develop a new type of pressure loss sub combined with a water eye tool, so as to get rid of the inherent limitation of replacing the reamer body or the water eye of the drill bit, and better increase the tool stability and ensure the wellbore quality. Summary of the Utility Model

[0003] In order to solve the above technical problems, the utility model provides a pressure loss sub combined with a water eye tool, which is safe and reliable, convenient to operate and implement, can effectively reduce the operation risk, and ensure the smooth completion of the reaming operation.

[0004] The utility model is achieved by the following technical solutions.

[0005] A pressure loss sub combined with a water eye tool includes a pressure loss sub body, and a pressure loss sub slot is provided at the female thread end of the pressure loss sub body; a water eye support device body is arranged inside the pressure loss sub body, and the upper flow channel of the water eye support device body is adjacent to the lower end of the pressure loss sub slot; a water eye support device body slot is provided on one side of the water eye support device body close to the female thread end of the pressure loss sub body; a water eye body is arranged inside the water eye support device body, and the upper end of the flow channel of the water eye body is adjacent to the lower end of the water eye support device body slot.

[0006] Further, the inner and outer diameters of the female thread end of the pressure loss sub body are larger than those of the male thread end.

[0007] Further, the inner diameter of the tool gradually decreases from the female thread end of the pressure loss sub body to the water eye support device body slot.

[0008] Further, the cross-sectional area of the water eye body gradually narrows from the upper end to the lower end of the flow channel.

[0009] Further, an O-ring groove for the upper flow path of the female thread of the pressure loss short joint and an O-ring groove for the lower flow path of the female thread of the pressure loss short joint are provided between the pressure loss short joint body and the water eye support device body.

[0010] Further, an O-ring groove for the water eye support device is provided between the water eye support device body and the water eye body.

[0011] The present utility model has obtained the following beneficial effects.

[0012] The water eye body of the present utility model adopts a corrosion-resistant material treated by carbonization to increase the tool life and the downhole operation time. The design of variable diameter and variable flow area of the pressure loss short joint body and the water eye support device increases the water horsepower. The O-ring groove and the clamping groove design increase the pressure stabilizing and stabilizing effects. When the present utility model is used in combination with a hydraulic reamer, it can effectively increase the water horsepower, reduce the risk of stepped wellbore, save the wellhead operation and tool installation and debugging time, increase the safety and stability of the tool during downhole operation, ensure the efficient and smooth implementation of the hydraulic reaming operation, and ultimately achieve the purpose of improving the cementing quality and optimizing the wellbore structure. Description of the Drawings

[0013] Figure 1 is the front view of the present utility model;

[0014] Figure 2 is Figure 1 the sectional view along line A-A in

[0015] Figure 3 is Figure 2 the enlarged view of part C in

[0016] Figure 4 is the front view of the water eye support device body of the present utility model;

[0017] Figure 5 is Figure 4 the sectional view along line B-B in

[0018] Figure 6 is the structural schematic diagram of the water eye body of the present utility model;

[0019] Figure 7 is the sectional view of the water eye body of the present utility model.

[0020] Wherein: 1. water eye body; 2. water eye support device body; 3. pressure loss short joint body; 4. clamping groove of the water eye support device body; 5. O-ring groove of the water eye support device; 6. clamping groove of the pressure loss short joint; 7. O-ring groove for the upper flow path of the female thread of the pressure loss short joint; 8. O-ring groove for the lower flow path of the female thread of the pressure loss short joint. Detailed Implementation Modes

[0021] The technical solution of the present utility model will be clearly and completely described below through specific embodiments.

[0022] As Figure 1-7 shown, a pressure loss short joint is paired with a water eye tool, including a water eye body 1, a water eye support device body 2, a pressure loss short joint body 3, a water eye support device body card slot 4, a water eye support device O-ring groove 5, a pressure loss short joint card slot 6, a pressure loss short joint female thread upper end flow channel O-ring groove 7, and a pressure loss short joint female thread lower end flow channel O-ring groove 8.

[0023] The water eye body 1 is located inside the water eye support device body 2. The lower end of the flow channel of the water eye body 1 points to the male thread end of the pressure loss short joint body 3, that is, the end with the smaller inner and outer diameters among the two end joints. And the upper end of the flow channel of the water eye body 1 faces the female thread end of the pressure loss short joint 3 and closely adheres to the lower end of the water eye support device body card slot 4. The design of the card slot plays a role in fixing and stabilizing the pressure. An O-ring groove 5 for the water eye support device is designed around the middle of the water eye body 1.

[0024] The water eye support device body 2 is located inside the pressure loss short joint body 3. The upper flow channel of the water eye support device body 2 is close to the lower end of the pressure loss short joint card slot 6. The design of the card slot plays a role in fixing and stabilizing the pressure. O-ring grooves 7 for the upper end flow channel of the pressure loss short joint female thread and 8 for the lower end flow channel of the pressure loss short joint female thread are respectively designed around the upper and lower flow channels of the water eye support device body 2.

[0025] The water eye body 1 of this application is a 95-series model carbonized water eye with high corrosion resistance. The cross-sectional area gradually narrows from the upper end to the lower end of the flow channel, and the pressure changes from low to high, playing a role in boosting pressure.

[0026] The inner diameter of the water eye support device body 2 gradually decreases from the end close to the female thread of the pressure loss short joint body 3 to the water eye support device body card slot 4. At the same time, the inner diameter of the female thread end of the pressure loss short joint body 3 also gradually decreases. Therefore, the inner diameter of the tool of this application changes from large to small from the female thread end of the pressure loss short joint body 3 to the water eye support device body card slot 4, and the force and pressure change from small to large. Cooperating with the water eye body 1, it increases the water horsepower again and plays a role in boosting pressure.

[0027] O-ring grooves are designed in both the water eye support device body 2 and the pressure loss short joint body 3 of this application. Especially, there are two O-ring grooves at the upper and lower ends designed in the pressure loss short joint body 3. The O-ring grooves can seal the water eye body 1 and the water eye support device replacement body 2 and play a role in stabilizing under force and pressure.

[0028] The utility model is used in combination with a hydraulic reamer, effectively increasing the hydraulic horsepower, reducing the risk of stepped wellbores, further improving the on-site operation efficiency, optimizing the operation procedure, increasing the safety of on-site operation tools. After the operation is completed, the tool can be disassembled on the drill floor, which is convenient to operate and implement, getting rid of the inherent limitations of replacing the reamer body or the nozzle of the drill bit, so as to better increase the tool stability and ensure the wellbore quality.

[0029] The embodiments described above are only described as the preferred embodiments of the utility model, and do not limit the concept and scope of the utility model. Without departing from the design concept of the utility model, various modifications and improvements made by ordinary engineering and technical personnel in the field to the technical solution of the utility model should fall within the protection scope of the utility model. The technical content for which the utility model requests protection has been fully recorded in the claims.

Claims

1. A pressure loss short joint combined with a nozzle tool, characterized in that: It includes a pressure loss nipple body (3), and a pressure loss nipple slot (6) is provided at the female thread end of the pressure loss nipple body (3); a water eye support device body (2) is arranged inside the pressure loss nipple body (3), and the upper flow channel of the water eye support device body (2) is adjacent to the lower end of the pressure loss nipple slot (6); a water eye support device body slot (4) is arranged on one side of the water eye support device body (2) close to the female thread end of the pressure loss nipple body (3); a water eye body (1) is arranged inside the water eye support device body (2), and the upper end of the flow channel of the water eye body (1) is adjacent to the lower end of the water eye support device body slot (4).

2. The pressure loss short joint and nozzle tool according to claim 1, characterized in that: The inner and outer diameters of the female thread end of the pressure loss nipple body (3) are larger than those of the male thread end.

3. The pressure loss short joint and nozzle tool according to claim 1, characterized in that: The inner diameter of the tool decreases from the female thread end of the pressure loss nipple body (3) to the water eye support device body slot (4).

4. A pressure loss nipple combined with a nozzle tool according to claim 1, characterized in that: The cross-sectional area of the water eye body (1) gradually narrows from the upper end to the lower end of the flow channel.

5. A pressure loss nipple and nozzle tool according to claim 1, characterized in that: A pressure loss nipple female thread upper flow channel O-ring groove (7) and a pressure loss nipple female thread lower flow channel O-ring groove (8) are provided between the pressure loss nipple body (3) and the water eye support device body (2).

6. A pressure loss short joint and nozzle tool according to claim 1, characterized in that: A water eye support device O-ring groove (5) is provided between the water eye support device body (2) and the water eye body (1).

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