Anti-sulfur removable production packer capable of sampling

Abstract

The utility model discloses an anti-sulfur removable production packer capable of sampling, and belongs to the field of packers.The anti-sulfur removable production packer capable of sampling comprises a packer body, a sampling assembly is arranged on the front face of the packer body and comprises a connecting pipe, the connecting pipe is fixedly connected with the front face of the packer body, an extraction pump is fixedly connected to the upper portion of the connecting pipe, and the upper portion of the extraction pump is fixedly connected with the lower portion of the packer body; the extraction pump is fixedly connected with the front face of the packer body, the upper portion of the extraction pump is connected with a detector through a conveying pipe line, the detector is fixedly connected with the front face of the packer body, an alarm is fixedly installed on the upper portion of the detector, and an extraction assembly is arranged on the left side of the detector. A filling assembly is arranged on the outer surface of the packer body. By arranging the sampling assembly, when an oil well is packed by the packing piece on the packer body, gas or liquid below the packing piece can be extracted for detection, the effect of conveniently testing underground substance composition is achieved, and the effect of preventing poison can be achieved.

Description

Technical Field

[0001] The present application relates to the field of packers, and in particular to a sampleable, sulfur-resistant and retrievable production packer. Background Art

[0002] A packer is a downhole tool connected to a downhole string and used to isolate the annular space between the oil pipe and the oil and gas well casing or the open hole wall. When it is necessary to isolate the annular space between the oil pipe and the oil and gas well casing or the open hole wall, the packer is connected to the downhole string and lowered to the designed depth. The packer is driven by hydraulic means to expand the packer to isolate the oil casing annulus. Different types of packers have different activation and release methods.

[0003] The patent document with announcement number CN221299128U discloses a sulfur-proof removable production packer. The utility model provides a sulfur-proof removable production packer, including a central tube, one end of which is connected to an anchor sealing insert, and the other end of which is connected to a release mechanism; the outer ring of the central tube is sequentially sleeved with an air-sealing rubber cylinder assembly, a cylinder sleeve, a locking ring seat, an upper cone, a slip sleeve, a lower cone, a lower connecting pipe and a lower joint along the axial direction; the outer wall of the upper cone is threadedly connected to the inner wall of the slip sleeve, the outer wall of the lower cone is threadedly connected to the inner wall of the lower connecting pipe, and the outer wall of the lower connecting pipe is threadedly connected to the inner wall of the lower joint; the cylinder sleeve, the locking ring seat and the upper cone are threadedly connected to the central tube. An annular space is formed between them, and a piston is arranged in the annular space. The rod of the piston is threadedly connected to the upper cone, and the upper cone is threadedly connected to the slip sleeve; a slip that matches the slip sleeve is arranged between the upper cone, the slip sleeve, the lower cone and the center tube; keyways are arranged on the piston and the center tube to accommodate key blocks, and the piston and the center tube are connected together through the key blocks. In the above application documents, the piston is driven by the hydrostatic pressure of the oil pipe to drive the movement of the slip to anchor to the inner wall of the casing to provide sealing force and complete the sealing. However, when oil and gas are extracted underground, toxic substances may be dug up, which is not convenient for sampling and testing the air or water below when the oil well is sealed, and it is not convenient to enhance the safety. Utility Model Content

[0004] In view of the deficiencies of the prior art, the present utility model provides a sulfur-proof retrievable production packer with sampling function, which solves the problems raised in the above-mentioned background art. To achieve the above objectives, the present utility model is realized through the following technical solutions: A sulfur-proof retrievable production packer with sampling function, including a packer body, a sampling assembly is arranged on the front of the packer body. The sampling assembly includes a connecting pipe, the connecting pipe is fixedly connected to the front of the packer body, an extraction pump is fixedly connected above the connecting pipe, the extraction pump is fixedly connected to the front of the packer body, a detector is connected above the extraction pump through a pipeline, the detector is fixedly connected to the front of the packer body, an alarm is fixedly installed above the detector, an extraction assembly is arranged on the left side of the detector, and a filling assembly is arranged on the outer surface of the packer body.

[0005] Preferably, the sampling assembly further includes a sampling pipe, the sampling pipe is fixedly connected to the front of the packer body, the sampling pipe is communicated with the connecting pipe, a first solenoid valve is fixedly connected below the sampling pipe, and the first solenoid valve is electrically connected to the detector.

[0006] Preferably, the extraction assembly includes an extraction pipe, the extraction pipe is fixedly connected to the left side of the detector, and a connector is fixedly connected above the extraction pipe.

[0007] Preferably, the filling assembly includes a storage bin, the storage bin is fixedly connected to the outer surface of the packer body, a safety valve is fixedly connected below the storage bin, a spray pipe is fixedly connected below the safety valve, and a pressurizing assembly is arranged above the storage bin.

[0008] Preferably, the pressurizing assembly includes a high-pressure gas cylinder, the high-pressure gas cylinder is fixedly connected to the outer surface of the packer body, a second solenoid valve is fixedly connected below the high-pressure gas cylinder, the second solenoid valve is fixedly connected to the upper part of the storage bin, and the second solenoid valve is electrically connected to the detector.

[0009] Preferably, a sealing member is arranged on the outer surface of the packer body, and the sealing member is arranged below the spray pipe.

[0010] The advantages of the present application are as follows:

[0011] (1) By setting the sampling assembly, when the sealing member on the packer body seals the oil well, the gas or liquid below the sealing member can be extracted for detection, which is convenient for testing the composition of downhole substances and can prevent poisoning.

[0012] (2) By setting the pressurizing assembly to pressurize the inside of the filling assembly, the filling material in the filling assembly is ejected to seal the gap between the sealing member and the wellbore wall, which has the effect of strengthening the sealing effect. Description of the Drawings

[0013] The accompanying drawings, which form a part of this application, are used to provide a further understanding of this application, making other features, objectives, and advantages of this application more apparent. The schematic embodiments and descriptions thereof in the accompanying drawings are used to explain this application and do not constitute an improper limitation to this application. In the drawings:

[0014] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 is a left view of the overall structure of the present utility model;

[0016] Figure 3 is of the present utility model Figure 1 schematic enlarged view of the structure at A in;

[0017] Figure 4 is of the present utility model Figure 2 schematic enlarged view of the structure at B in.

[0018] In the above figures,

[0019] 1. Packer body; 2. Sampling assembly; 201. Connecting pipe; 202. Extraction pump; 203. Delivery pipe; 204. Detector; 205. Alarm; 206. Sampling pipe; 207. First solenoid valve; 3. Extraction assembly; 301. Extraction pipe; 302. Connector; 4. Filling assembly; 401. Accommodation chamber; 402. Safety valve; 403. Spray pipe; 5. Pressurization assembly; 501. High-pressure gas cylinder; 502. Second solenoid valve; 6. Sealing element. Detailed implementation manners

[0020] In order to enable those skilled in the art of this technology to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0021] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will refer to the accompanying drawings and combine with the embodiments to detail this application. Embodiment

[0022] See Figures 1 - 4, this embodiment provides a sulfur-proof and retrievable production packer with sampling function, which includes a packer body 1. A sealing element 6 is arranged on the outer surface of the packer body 1. The sealing element 6 is arranged below the nozzle 403. The sealing element 6 is a part of the packer body 1. The wellbore is sealed by the expansion of the sealing element 6 on the packer body 1, which is prior art. A sampling assembly 2 is arranged on the front of the packer body 1. The sampling assembly 2 includes a connecting pipe 201, and the connecting pipe 201 is fixedly connected to the front of the packer body 1. An extraction pump 202 is fixedly connected above the connecting pipe 201, and the extraction pump 202 is fixedly connected to the front of the packer body 1. Above the extraction pump 202, a detector 204 is connected through a pipeline of a delivery pipe 203. The detector 204 is used to detect harmful components in the extracted liquid or gas, which is prior art. The detector 204 is fixedly connected to the front of the packer body 1. An alarm 205 is fixedly installed above the detector 204. When the detector 204 detects harmful components in the liquid or gas, the alarm 205 will be activated to give an alarm. The sampling assembly 2 further includes a sampling pipe 206. The sampling pipe 206 is fixedly connected to the front of the packer body 1. The sampling pipe 206 is communicated with the connecting pipe 201. A channel is arranged in the packer body 1 to communicate the sampling pipe 206 with the connecting pipe 201. A first solenoid valve 207 is fixedly connected below the sampling pipe 206. The first solenoid valve 207 is normally open and is electrically connected to the detector 204. An extraction assembly 3 is arranged on the left side of the detector 204. The extraction assembly 3 includes an extraction pipe 301, and the extraction pipe 301 is fixedly connected to the left side of the detector 204. The extraction pipe 301 can extract liquid or gas samples in the detector 204. A joint 302 is fixedly connected above the extraction pipe 301. A filling assembly 4 is arranged on the outer surface of the packer body 1.

[0023] When the above equipment is specifically used, after the packer body 1 is lowered into the well, the wellbore is sealed by the expansion of the sealing element 6 on the packer body 1. At this time, the extraction pump 202 is started, and the sampling pipe 206 extracts air or water in the well through the extraction pump 202. The air or water will enter the connecting pipe 201 through the channel in the packer body 1 and is finally delivered to the detector 204 through the delivery pipe 203. At this time, the detector 204 will detect sulfides or other toxic substances in the sampled air or water. If toxic substances are detected, the alarm 205 will be activated to give an alarm for prompt, and at the same time, the first solenoid valve 207 is closed to seal the sampling pipe 206. At this time, a hose can be connected to the joint 302, and thus the air or water sample in the detector 204 can be extracted to the ground through the extraction pipe 301 for further analysis and inspection. Embodiment

[0024] See Figures 1 - 4, on the basis of the first embodiment, the filling component 4 includes a receiving bin 401 which is filled with a colloidal filling material for sealing the gap between the packer element 6 and the wellbore wall. The receiving bin 401 is fixedly connected to the outer surface of the packer body 1. A safety valve 402 is fixedly connected below the receiving bin 401, and a nozzle 403 is fixedly connected below the safety valve 402. A pressurizing component 5 is arranged above the receiving bin 401. The pressurizing component 5 includes a high-pressure gas cylinder 501 which is fixedly connected to the outer surface of the packer body 1. A second electromagnetic valve 502 is fixedly connected below the high-pressure gas cylinder 501. The second electromagnetic valve 502 is normally closed and is fixedly connected to the upper part of the receiving bin 401. The second electromagnetic valve 502 is electrically connected to the detector 204.

[0025] When the detector 204 detects the presence of toxic substances in the downhole air or water during the specific use of the above device, the second electromagnetic valve 502 will also be opened. At this time, the gas in the high-pressure gas cylinder 501 will be injected into the receiving bin 401. The safety valve 402 will open under the pressure. The colloidal filling material in the receiving bin 401 will be sprayed out through the nozzle 403 and fall onto the packer element 6. At this time, the colloidal filling material will gradually solidify after contacting the air, so as to seal the gap between the wellbore wall and the packer element 6, in order to enhance the sealing effect and prevent the leakage of toxic substances.

[0026] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A sampleable sulfur-proof retrievable production packer, comprising a packer body (1), characterized in that: The front of the packer body (1) is provided with a sampling assembly (2), the sampling assembly (2) comprising a connecting pipe (201), the connecting pipe (201) being fixedly connected to the front of the packer body (1), an extraction pump (202) being fixedly connected above the connecting pipe (201), the extraction pump (202) being fixedly connected to the front of the packer body (1), a detector (204) being connected above the extraction pump (202) via a delivery pipe (203), the detector (204) being fixedly connected to the front of the packer body (1), an alarm (205) being fixedly installed above the detector (204), an extraction assembly (3) being provided on the left side of the detector (204), and a filling assembly (4) being provided on the outer surface of the packer body (1).

2. A sampleable sulfur-proof retrievable production packer according to claim 1, characterized in that: The sampling assembly (2) further comprises a sampling tube (206), wherein the sampling tube (206) is fixedly connected to the front side of the packer body (1), the sampling tube (206) is connected to the connecting tube (201), a first solenoid valve (207) is fixedly connected below the sampling tube (206), and the first solenoid valve (207) is electrically connected to the detector (204).

3. A sampleable anti-sulfur retrievable production packer according to claim 2, characterized in that: The extraction assembly (3) comprises an extraction tube (301), the extraction tube (301) being fixedly connected to the left side of the detector (204), and a joint (302) being fixedly connected to the top of the extraction tube (301).

4. A sampleable sulfur-proof retrievable production packer according to claim 3, characterized in that: The filling assembly (4) comprises a containing chamber (401), the containing chamber (401) being fixedly connected to the outer surface of the packer body (1), a safety valve (402) being fixedly connected below the containing chamber (401), a nozzle (403) being fixedly connected below the safety valve (402), and a pressurizing assembly (5) being arranged above the containing chamber (401).

5. A sampleable sulfur-proof retrievable production packer according to claim 4, characterized in that: The pressurizing component (5) comprises a high-pressure gas cylinder (501), wherein the high-pressure gas cylinder (501) is fixedly connected to the outer surface of the packer body (1), a second solenoid valve (502) is fixedly connected below the high-pressure gas cylinder (501), the second solenoid valve (502) is fixedly connected to the top of the containing chamber (401), and the second solenoid valve (502) is electrically connected to the detector (204).

6. A sampleable sulfur-proof retrievable production packer according to claim 5, characterized in that: A packing member (6) is provided on the outer surface of the packer body (1), and the packing member (6) is arranged below the nozzle (403).

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