Ultrahigh-temperature multi-pipe real-time regulation and control layered and segmented injection-production and long-acting monitoring device

Abstract

An ultrahigh-temperature multi-pipe real-time regulation and control layered and segmented injection-production and long-acting monitoring device is characterized in that a heat insulation oil pipe is arranged at the lower end of a large oil pipe hanger, and a high-temperature production packer is arranged on the heat insulation oil pipe; the heat insulation oil pipe is sequentially connected with the high-temperature jet pump outer working barrel, the high-temperature deep well safety valve, the oil pipe inside and outside penetrating short section, the open type telescopic short section and the steam injection and liquid production channel switching valve, and the steam injection and liquid production channel switching valve is concentrically connected with the first-stage independent injection and liquid production pipe column, the second-stage independent injection and liquid production pipe column and the inserted sealing inner working pipe column. The method has the beneficial effects that an ultrahigh-temperature multi-pipe injection and production switching mode is combined with a high-temperature injection and production integrated process, and the method is not limited to combination of injection and production processes such as high-temperature jet pump injection and production integration, high-temperature Y-pipe electric pump injection and production integration and high-temperature casting and fishing electric pump / screw pump injection and production integration; fine regulation, control, steam injection and liquid production and long-acting monitoring of a large-well-spacing long-well-section horizontal well and a multi-layer high-inclination directional well can be achieved, and the injection and production effect and efficient development of heavy oil thermal production are guaranteed.

Description

Technical Field

[0001] This invention relates to the field of oil and gas drilling and production equipment technology, and more specifically to an ultra-high temperature multi-tube real-time control layered and segmented injection and production and long-term monitoring device. Background Technology

[0002] Offshore heavy oil reserves are abundant, deeply buried, and highly viscous. Thermal recovery methods can significantly improve heavy oil recovery rates. Currently, the main methods for offshore heavy oil thermal recovery include steam injection, multi-component thermal fluids, and steam drive. Since 2021, several heavy oil thermal recovery platforms, such as Luda 21-2, Luda 5-2N, Luda 5-2C, and Jinzhou 23-2, have been put into production, and the number of thermal recovery wells has been increasing year by year, now entering a stage of large-scale development. Heavy oil thermal recovery well types have expanded from horizontal wells with large well spacing and long well sections to multi-level, highly deviated directional wells. Most horizontal thermal recovery wells have completed 3-4 rounds of steam injection operations, and uneven gas intake in the horizontal sections is gradually becoming apparent. Uneven steam injection also exists in multi-level directional wells. Therefore, implementing precise control of steam injection and fluid production, as well as long-term monitoring technology, is particularly important for horizontal wells with large well spacing and long well sections, and multi-level, highly deviated directional wells. Effective real-time control and monitoring technologies are urgently needed to ensure injection and production effects and support efficient heavy oil development. However, existing injection and production and monitoring technologies cannot meet the requirements for precise control of steam injection and production fluid and long-term monitoring of directional wells. Therefore, it is urgent to develop an ultra-high temperature real-time control layered and segmented injection and production and long-term monitoring technology device. Summary of the Invention

[0003] This invention overcomes the shortcomings of the prior art and provides an ultra-high temperature multi-tube real-time control layered and segmented injection and extraction and long-term monitoring device.

[0004] The ultra-high temperature multi-tube real-time control layered and segmented injection and production and long-term monitoring device includes: a heat-insulated oil pipe at the lower end of the large oil pipe hanger, a high-temperature production packer on the heat-insulated oil pipe, and the heat-insulated oil pipe connected in sequence to the outer working cylinder of the high-temperature jet pump, the high-temperature deep well safety valve, the inner and outer tubing crossing section, the open expansion joint, and the steam injection and fluid production channel switching valve. The steam injection and fluid production channel switching valve is concentrically connected to the primary independent injection and production tubing string, the secondary independent injection and production tubing string, and the inserted sealed inner working tubing string. The lower end of the primary independent injection-production tubing is connected to the primary insertion seal, and the primary independent injection-production tubing is inserted into the inner working cylinder of the top packer. The lower end of the secondary independent injection and production tubing is connected to the secondary insertion seal, and the secondary independent injection and production tubing is inserted into the inner working cylinder of the secondary isolation packer; The inner working tubing of the insertion seal is connected to the inner insert seal of the three-stage independent injection and production tubing through an interference fit insert seal. The three-stage independent injection and production tubing is connected in sequence to the perforated tubing and the round plug. The outer wall of the three-stage independent injection and production tubing is connected to the three-stage insertion seal. The three-stage independent injection and production tubing is inserted into the inner working cylinder of the three-stage isolation packer. Multiple independent steam injection and liquid production channels are evenly distributed circumferentially inside the steam injection and liquid production channel switching valve. A high-temperature long-term monitoring cable is installed through the central axis of the steam injection and liquid production channel switching valve. The steam injection and liquid production channels are connected to the first-level independent injection and production tubing, the second-level independent injection and production tubing, and the inner working tubing inserted into the seal, respectively. The high-temperature long-term monitoring cable is installed in the passageway. The high-temperature long-term monitoring cable passes through the large oil tubing hanger, the high-temperature production packer, the oil tubing inside and outside the short section, the steam injection and liquid production channel switching valve, the inner working string of the insertion seal and the three-stage independent injection and production string in sequence.

[0005] The open-type telescopic section is a tensile-resistant open telescopic structure.

[0006] The high-temperature long-life monitoring cable is fixed inside the round plug by a high-temperature long-life monitoring cable fixer.

[0007] The primary insertion seal and the top packer maintain a sliding seal through thermal expansion compression sealing.

[0008] The steam injection and fluid production channel switching valve is equipped with a primary flow channel, a secondary flow channel, and a tertiary flow channel. The primary, secondary, and tertiary flow channels are each connected to the main flow channel through independent channel-sealed metal ball valves. The primary, secondary, and tertiary flow channels are respectively connected to the primary independent injection and production tubing, the secondary independent injection and production tubing, and the inner working tubing inserted into the seal.

[0009] The beneficial effects of this invention are as follows: This invention combines the ultra-high temperature multi-tube injection-production switching method with the high temperature injection-production integrated process. It is not limited to the combination of high temperature jet pump injection-production integrated, high temperature Y-tube electric pump injection-production integrated, high temperature drop-and-retrieve electric pump / screw pump injection-production integrated, etc. It can realize the fine control of steam injection and production fluid and long-term monitoring of horizontal wells with large well spacing and long well sections, and multi-level high-angle directional wells, so as to ensure the injection-production effect and efficient development of heavy oil thermal recovery. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the steam injection and fluid collection channel switching valve of the present invention.

[0011] In the diagram: 101. Main tubing hanger; 102. Insulated tubing; 103. High-temperature production packer; 104. High-temperature jet pump outer working cylinder; 105. High-temperature deep well safety valve; 106. Tubing internal and external crossing section; 107. Open expansion joint; 108. Steam injection / fluid production channel switching valve; 109. Primary independent injection / production tubing string; 110. Secondary independent injection / production tubing string; 111. Tertiary independent injection / production tubing string; 112. Perforated tubing; 113. Circular plug; 201 1. Insertion seal inner working tube string; 202. Insertion seal; 301. Top packer; 304. Secondary isolation packer; 401. Primary insertion seal; 402. Secondary insertion seal; 403. Tertiary insertion seal; 404. High temperature long-life monitoring cable; 405. High temperature long-life monitoring cable holder; 501. Main passage; 502. Channel seal metal ball valve; 503. Primary flow passage; 504. Secondary flow passage; 505. Tertiary flow passage. Detailed Implementation

[0012] Example The ultra-high temperature multi-tube real-time control layered and segmented injection and production and long-term monitoring device includes: a heat-insulated oil pipe 102 at the lower end of a large oil pipe hanger 101, a high-temperature production packer 103 on the heat-insulated oil pipe 102, and the heat-insulated oil pipe 102 is sequentially connected to a high-temperature jet pump outer working cylinder 104, a high-temperature deep well safety valve 105, an inner and outer tubing crossing section 106, an open expansion joint 107, and a steam injection and fluid production channel switching valve 108. The steam injection and fluid production channel switching valve 108 is concentrically connected to a primary independent injection and production tubing string 109, a secondary independent injection and production tubing string 110, and an inner working tubing string 201 inserted into a seal. The lower end of the primary independent injection-production tubing 109 is connected to the primary insertion seal 401, and the primary independent injection-production tubing 109 is inserted into the inner working cylinder of the top packer 301. The lower end of the secondary independent injection and production tubing 110 is connected to the secondary insertion seal 402, and the secondary independent injection and production tubing 110 is inserted into the inner working cylinder of the secondary isolation packer 304; The inner working tubing 201 of the insertion seal is connected to the inner working tubing 111 of the three-stage independent injection and production tubing through the interference fit insertion seal 202. The three-stage independent injection and production tubing 111 is connected in sequence to the perforated tubing 112 and the round plug 113. The outer wall of the three-stage independent injection and production tubing 111 is connected to the three-stage insertion seal 403. The three-stage independent injection and production tubing 111 is inserted into the inner working cylinder of the three-stage isolation packer 403. Multiple independent steam injection and fluid production channels are evenly distributed circumferentially inside the steam injection and fluid production channel switching valve 108. A high-temperature long-term monitoring cable passage is installed through the central axis of the steam injection and fluid production channel switching valve 108. The steam injection and fluid production channels are connected to the first-level independent injection and production tubing string 109, the second-level independent injection and production tubing string 110, and the inner working tubing string 201 inserted into the seal, respectively. The high-temperature long-term monitoring cable passage contains a high-temperature long-term monitoring cable 404, which passes through the large tubing hanger 101, the high-temperature production packer 103, the tubing inside and outside crossing section 106, the steam injection and fluid production channel switching valve 108, the inner working tubing string 201 inserted into the seal, and the third-level independent injection and production tubing string 111 in sequence.

[0013] The open-type telescopic section 107 is a tensile-resistant open telescopic structure.

[0014] The high-temperature long-life monitoring cable 404 is fixed inside the round plug 113 by the high-temperature long-life monitoring cable fixer 405.

[0015] The primary insertion seal 401 and the top packer 301 maintain a sliding seal through thermal expansion compression sealing.

[0016] The steam injection and fluid production channel switching valve is equipped with a primary flow channel 503, a secondary flow channel 504, and a tertiary flow channel 505. The primary flow channel 503, the secondary flow channel 504, and the tertiary flow channel 505 are connected to the main passage 501 through independent channel sealing metal ball valves 502. The primary flow channel 501, the secondary flow channel 504, and the tertiary flow channel 505 are connected to the primary independent injection and production tubing 109, the secondary independent injection and production tubing 110, and the inner working tubing 201 of the insertion seal, respectively.

[0017] like Figure 1 and Figure 2 As shown, the working principle of this invention is as follows: This solution utilizes a steam injection / liquid production channel switching valve 108 in conjunction with a high-temperature long-life monitoring cable 404 to achieve temperature monitoring of different compartments or strata phases. The steam injection / liquid production channel switching valve 108 controls the flow paths of the primary flow channel 503, secondary flow channel 504, and tertiary flow channel 505 by controlling the opening and closing of the channel-sealed metal ball valve 502. This provides real-time feedback on the heavy oil status in the corresponding primary independent injection / production tubing 109, secondary independent injection / production tubing 110, and the inserted sealed working tubing 201. Furthermore, the steam injection / liquid production channel switching valve 108 can employ an all-metal seal and either hydraulic or electrical control for its switching actuator. It has an overall temperature resistance rating of ≥370℃ and a pressure resistance rating of ≥21MPa, enabling real-time, precise control of ultra-high temperature, stratified, and segmented injection / production.

[0018] The embodiments of the present invention have been described in detail above, but the content described is only a preferred embodiment of the present invention and should not be considered as limiting the scope of the present invention. All equivalent changes and improvements made in accordance with the scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A real-time, multi-tube, stratified, segmented injection and production device for ultra-high temperature injection, characterized in that: include: The lower end of the large tubing hanger (101) is equipped with a heat-insulated tubing (102), and a high-temperature production packer (103) is installed on the heat-insulated tubing (102). The heat-insulated tubing (102) is connected in sequence to the outer working cylinder of the high-temperature jet pump (104), the high-temperature deep well safety valve (105), the tubing inner and outer crossing short section (106), the open expansion short section (107), and the steam injection and fluid production channel switching valve (108). The steam injection and fluid production channel switching valve (108) is concentrically connected to the first-level independent injection and production tubing string (109), the second-level independent injection and production tubing string (110), and the inner working tubing string (201) inserted into the seal. The lower end of the primary independent injection-production tubing (109) is connected to the primary insertion seal (401), and the primary independent injection-production tubing (109) is inserted into the inner working cylinder of the top packer (301). The lower end of the secondary independent injection and production tubing (110) is connected to the secondary insertion seal (402), and the secondary independent injection and production tubing (110) is inserted into the inner working cylinder of the secondary isolation packer (304); The inner working tubing (201) of the insertion seal is connected to the inner working tubing (111) of the three-stage independent injection and production tubing through an interference fit insert seal (202). The three-stage independent injection and production tubing (111) is connected to the perforated tubing (112) and the round plug (113) in sequence. The outer wall of the three-stage independent injection and production tubing (111) is connected to the three-stage insertion seal (403). The three-stage independent injection and production tubing (111) is inserted into the inner working cylinder of the three-stage isolation packer (403). Multiple independent steam injection and liquid collection channels are evenly distributed around the inside of the steam injection and liquid collection channel switching valve (108). A high-temperature long-term monitoring cable is installed through the middle axis of the steam injection and liquid collection channel switching valve (108). The steam injection and liquid collection channels are connected to the first-level independent injection and collection tubing (109), the second-level independent injection and collection tubing (110), and the inner working tubing (201) of the insertion seal, respectively. The high-temperature long-term monitoring cable (404) is installed in the passageway. The high-temperature long-term monitoring cable (404) passes through the large oil pipe hanger (101), the high-temperature production packer (103), the oil pipe inside and outside crossing section (106), the steam injection and liquid production channel switching valve (108), the inner working string inserted into the seal (201), and the three-stage independent injection and production string (111) in sequence.

2. The ultra-high temperature multi-tube real-time control layered and segmented injection and production and long-term monitoring device according to claim 1, characterized in that: The open-type telescopic section (107) is a tensile-resistant open telescopic structure.

3. The ultra-high temperature multi-tube real-time control layered and segmented injection and production and long-term monitoring device according to claim 1, characterized in that: The high-temperature long-life monitoring cable (404) is fixed inside the round plug (113) by the high-temperature long-life monitoring cable fixer (405).

4. The ultra-high temperature multi-tube real-time control layered and segmented injection and production and long-term monitoring device according to claim 1, characterized in that: The primary insertion seal (401) and the top packer (301) maintain a sliding seal through thermal expansion compression sealing.

5. The ultra-high temperature multi-tube real-time control layered and segmented injection and production and long-term monitoring device according to claim 1, characterized in that: The steam injection and fluid production channel switching valve is equipped with a primary flow channel (503), a secondary flow channel (504), and a tertiary flow channel (505). The primary flow channel (503), the secondary flow channel (504), and the tertiary flow channel (505) are connected to the main passage (501) through independent channel sealing metal ball valves (502). The primary flow channel (501), the secondary flow channel (504), and the tertiary flow channel (505) are connected to the primary independent injection and production tubing (109), the secondary independent injection and production tubing (110), and the inner working tubing (201) of the insertion seal, respectively.

Images