Fixed workover rig jet pump injection-production integrated process pipe column and process method

Abstract

The invention belongs to the technical field of thick oil exploitation and heat production processes, and discloses an immovable workover rig jet pump injection-production integrated process pipe column and a process method. The injection-production process can be completed through one pipe column. The process pipe column comprises a production sleeve and a first heat injection pipe column section located in the production sleeve, the process pipe column comprises a heat insulation oil pipe, a small oil pipe and a heat injection bypass valve, the small oil pipe and the heat injection bypass valve are sleeved with the heat insulation oil pipe, the process pipe column is connected with the first heat injection pipe column section, a second heat injection pipe column section and the production pipe column section, and the second heat injection pipe column section is connected with an injection allocation valve. The heat injection bypass valve comprises a first inlet communicated with the heat insulation oil pipe, a first outlet communicated with the second heat injection pipe column section and a second outlet communicated with the production pipe column section. The process pipe column comprises a heat injection mode, wherein heat injection fluid enters a second heat injection pipe column section from an annular space between a heat insulation oil pipe and a small oil pipe through a first inlet and a first outlet to an injection allocation valve; and in the production mode, output liquid of the stratum returns to the wellhead through the production pipe column section, the second outlet and the annulus between the heat insulation oil pipe and the small oil pipe.

Description

Technical Field

[0001] The present invention relates to the technical field of thermal recovery processes for heavy oil development, and particularly to an integrated injection-production process string and process method of a jet pump without a workover rig. Background Art

[0002] The thermal recovery development of heavy oil is limited by the temperature resistance of the lifting tools and usually completed by two strings of pipes. One string is an injection heat pipe string, specifically used to inject high-temperature thermal fluid into the well to reduce the viscosity of the crude oil. After the injection of heat, another production pipe string is lowered to extract the downhole fluid after viscosity reduction by heat injection, thus completing the entire production process. This heavy oil thermal recovery method not only affects the oil production efficiency, but also during the injection-production conversion process, the workover fluid will contaminate the reservoir and reduce the heat injection effect. To solve this problem and avoid the operation process of two strings of pipes, the integrated injection-production lifting process technology of a jet pump has been proposed in this field. Its working principle is as follows: using the high-temperature-resistant concentric pipe jet pump lifting process technology, during heat injection, a small tubing is lifted to create a heat injection channel, enabling the normal injection of high-temperature thermal fluid. After the heat injection is completed, another small tubing is connected back, the heat injection channel is closed, and the jet pump core is put into production. During this process, the injection-production conversion can be completed by the tripping of a small tubing, without the need to lower two strings of injection and production pipes, greatly reducing the workover time and workover cost, and improving the production efficiency and heat utilization rate.

[0003] However, there are still two problems with this integrated injection-production pipe string. One is that the tripping of a small tubing will occupy the time of the workover rig for platforms with a large number of wellheads, reducing the production efficiency. The other is that when the small tubing is lowered again, the pipe string needs to be pressure-tested for the second time, increasing the uncertainty risk. Summary of the Invention

[0004] In order to avoid the process of tripping a small tubing in the prior art and truly achieve the injection-production process with one string of pipes, the present invention proposes an integrated injection-production process string and process method of a jet pump without a workover rig.

[0005] The integrated injection-production process pipe string of a workover rig with stationary operation according to the present invention includes: a production casing, a first heat injection pipe string section located within the production casing, the first heat injection pipe string section including a heat-insulating tubing and a small tubing sleeved within the heat-insulating tubing, a heat injection bypass valve connected to the bottom end of the first heat injection pipe string section, a second heat injection pipe string section connected to the heat injection bypass valve, the second heat injection pipe string section being connected to an injection-allocation valve within the formation, and a production pipe string section connected to the heat injection bypass valve. Among them, the heat injection bypass valve includes a first inlet connected to the heat-insulating tubing, a first outlet connected to the second heat injection pipe string section, and a second outlet connected to the production pipe string section. The integrated injection-production process pipe string of a workover rig with stationary operation includes a heat injection mode: the heat injection fluid sequentially enters the second heat injection pipe string section until the injection-allocation valve through the annulus between the heat-insulating tubing and the small tubing, the first inlet, and the first outlet; and a production mode: the produced fluid from the formation sequentially returns to the wellhead through the production pipe string section, the second outlet, and the annulus between the heat-insulating tubing and the small tubing.

[0006] Further, the production pipe string section includes a jet pump connected to the second outlet. The jet pump includes an outer pump barrel connected to the heat-insulating tubing, an inner pump barrel connected to the small tubing, and a plunger coaxially connected to the inner pump barrel. The outer diameters of the inner pump barrel and the plunger are the same, such that the inner pump barrel and the plunger can freely extend within the outer pump barrel.

[0007] Further, the sealing surface gap between the plunger and the outer pump barrel is 0.15 - 0.25 mm.

[0008] Further, the production pipe string section further includes a high-temperature resistant safety valve connected to the outer pump barrel of the jet pump.

[0009] Further, a common tubing is connected between the heat-insulating tubing and the outer pump barrel, and an adapter is connected between the outer pump barrel and the high-temperature resistant safety valve.

[0010] Further, a thermal recovery packer is installed on the heat-insulating tubing, and a thermal recovery gas release valve is provided on the thermal recovery packer. The integrated injection-production process pipe string of a workover rig with stationary operation further includes a nitrogen injection mode: nitrogen enters the wellbore through the thermal recovery gas release valve on the thermal recovery packer from the annulus between the production casing and the heat-insulating tubing to reduce the temperature of the downhole annulus.

[0011] Further, a constant-pressure opening valve is also provided on the thermal recovery packer.

[0012] Further, the integrated injection-production process pipe string of a workover rig with stationary operation further includes a hydraulic control pipeline assembly. The hydraulic control pipeline assembly includes a first hydraulic control pipeline for controlling the opening and closing of the first outlet of the heat injection bypass valve, a second hydraulic control pipeline for controlling the setting of the thermal recovery packer, a third hydraulic control pipeline for controlling the opening and closing of the thermal recovery gas release valve, and a fourth hydraulic control pipeline for controlling the opening and closing of the high-temperature resistant safety valve.

[0013] According to the integrated injection-production process method of the jet pump of the workover rig without pulling out the pipe string of the present invention, using the above-mentioned integrated injection-production process pipe string of the jet pump of the workover rig without pulling out the pipe string, the method includes the following steps: Step 1: Lower the integrated injection-production process pipe string of the jet pump of the workover rig without pulling out the pipe string into the well and conduct a pressure test to be qualified; Step 2: Pressurize through the second hydraulic control pipeline to set the thermal recovery packer, so as to seal the annulus between the production casing and the heat-insulating tubing; Step 3: Open the first outlet of the heat injection bypass valve through the first hydraulic control pipeline to start the heat injection mode; Step 4: After the heat injection is completed, close the wellhead for soaking. After the soaking is completed, close the first outlet of the heat injection bypass valve through the first hydraulic control pipeline, and open the high-temperature resistant safety valve through the fourth hydraulic control pipeline to carry out self-flow production; Step 5: After the self-flow production is completed, put into the production pump core of the jet pump, and inject power fluid through the surface piston pump to make the jet pump work to start the production mode.

[0014] Further, in Step 3, it also includes simultaneously controlling the opening of the thermal recovery gas release valve through the third hydraulic control pipeline to start the nitrogen injection mode.

[0015] Compared with the traditional heavy oil thermal recovery technology, the integrated injection-production process pipe string and method of the jet pump of the workover rig without pulling out the pipe string of the present invention have significant advantages. The traditional technology requires two pipe strings to separately complete heat injection and oil production, or although there is an integrated pipe string, it is necessary to pull out and lower the small tubing to switch the operation mode, resulting in low efficiency, high cost and high risk. While the present invention realizes the rapid switching between heat injection and production through the innovatively designed pipe string structure, especially the special structures of the heat injection bypass valve and the jet pump, without pulling out and lowering the pipe string, greatly simplifies the operation process, reduces equipment wear and workover time, and reduces costs. Among them, the heat injection bypass valve adopts a high-temperature resistant three-way valve design, and the control valve plate switches the conduction direction through the hydraulic control pipeline to realize the free conversion between heat injection and production; the inner pump barrel and the plunger of the jet pump adopt an equal-diameter design, cancel the existing stepped seal structure, so that the plunger can freely extend in the outer pump barrel to compensate for the thermal expansion and contraction differences of the inner and outer pipe strings and avoid jamming; through the reasonable design of the gap between the seal surface of the plunger and the outer pump barrel, both the leakage amount is controlled and the freedom of movement of the plunger is ensured. At the same time, the process pipe string is equipped with four hydraulic control pipelines to respectively control the heat injection bypass valve, the thermal recovery packer, the thermal recovery gas release valve and the high-temperature resistant safety valve, realizing remote control and automatic operation, reducing manual intervention, improving operation efficiency and safety. In addition, the design of components such as the high-temperature resistant safety valve and the constant pressure opening valve strengthens the safety and reliability of the operation, can effectively cope with the complex working conditions of offshore heavy oil thermal recovery, and has a broad application prospect. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of the integrated injection-production process pipe string of the jet pump of the workover rig without pulling out the pipe string according to an embodiment of the present invention;

[0017] Figure 2 For Figure 1Schematic diagram of the heat injection process using the stationary workover rig jet pump injection-production integrated process string shown;

[0018] Figure 3 is Figure 1 Schematic diagram of the production process using the stationary workover rig jet pump injection-production integrated process string shown;

[0019] Figure 4 is Figure 1 Schematic comparison diagram of the structure of the jet pump shown and the structure of the jet pump in the prior art;

[0020] Figure 5 Is the flow chart of the stationary workover rig jet pump injection-production integrated process method according to an embodiment of the present invention. Detailed implementation manners

[0021] In order to better understand the purpose, structure and function of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0022] Figure 1 Shows the structure of the stationary workover rig jet pump injection-production integrated process string 100 according to an embodiment of the present invention. As Figure 1 shown, the stationary workover rig jet pump injection-production integrated process string 100 may include: a production casing 101, a first heat injection pipe string section located inside the production casing 101, the first heat injection pipe string section includes a heat-insulating oil pipe 11 and a small oil pipe 13 sleeved inside the heat-insulating oil pipe 11, a heat injection bypass valve 7 connected to the bottom end of the first heat injection pipe string section, a second heat injection pipe string section 8 connected to the heat injection bypass valve 7, the second heat injection pipe string section 8 is connected to a water injection valve 20 in the formation, and a production pipe string section 102 connected to the heat injection bypass valve 7. Among them, the heat injection bypass valve 7 includes a first inlet 71 connected to the heat-insulating oil pipe 11, a first outlet 72 connected to the second heat injection pipe string section 8, and a second outlet 73 connected to the production pipe string section 102. The stationary workover rig jet pump injection-production integrated process string 100 may include as Figure 2 shown heat injection mode: the heat injection fluid flows into the formation through the heat injection channel 18 (the red arrow shows the flow direction of the heat injection fluid). Specifically, the heat injection fluid sequentially enters the second heat injection pipe string section 8 until the water injection valve 20 from the annulus between the heat-insulating oil pipe 11 and the small oil pipe 13 through the first inlet 71 and the first outlet 72; and as Figure 3 shown production mode: the produced fluid from the formation returns to the wellhead through the production channel 19 (the gray and green arrows show the flow direction of the produced fluid). Specifically, the produced fluid from the formation returns to the wellhead through the production pipe string section 102, the second outlet 73 and the annulus between the heat-insulating oil pipe 11 and the small oil pipe 13 in sequence.

[0023] The integrated injection-production process string 100 of the workover rig without moving of the embodiment of the present invention realizes the convenient switching between the heat injection mode and the production mode by the conduction or disconnection between the first inlet 71 and the first outlet 72 of the heat injection bypass valve 7. There is no need to lift and lower the small tubing as in the prior art to complete the transformation of the operation mode. On the one hand, the operation process is simplified and the operation time is reduced. On the other hand, the production interruption caused by lifting and lowering the small tubing is also avoided, so that the heat injection and production processes can be carried out continuously, effectively improving the production efficiency of offshore heavy oil thermal recovery. At the same time, the use time and frequency of the workover rig are reduced, the equipment wear and the workover operation cost are reduced, and the economic loss caused by production interruption is also reduced.

[0024] In the preferred embodiment as Figure 1 and Figure 4 shown, the production string section 102 may include a jet pump 15 communicated with the second outlet 73. The jet pump 15 may include an outer pump barrel 151 connected to the heat-insulating tubing 11, an inner pump barrel 152 connected to the small tubing 13, and a plunger 153 coaxially connected to the inner pump barrel 152. The outer diameters of the inner pump barrel 152 and the plunger 153 are the same, so that the inner pump barrel 152 and the plunger 153 can freely extend in the outer pump barrel 151.

[0025] As Figure 4 shown, the left figure shows the structure of the existing jet pump 15', and the right figure shows the structure of the jet pump 15 of the present application. The existing jet pump 15' includes an outer pump barrel 151' connected to the heat-insulating tubing, an inner pump barrel 152' connected to the small tubing, and a plunger 153' coaxially connected to the inner pump barrel 152'. The outer diameters of the inner pump barrel 152' and the plunger 153' are not the same, and a step is generated at the connection between the two. During the heat injection process, due to the difference in thermal expansion and contraction between the heat-insulating tubing 11 and the small tubing 13, abnormal conditions such as jamming of the inner pump barrel 152' in the outer pump barrel 151' may occur. However, for the jet pump 15 of the present application, by adopting an equal-diameter design for the inner pump barrel 152 and the plunger 153, the inner pump barrel 152 and the plunger 153 can freely extend in the outer pump barrel 151, effectively releasing the elongation amount generated by heat, so as to avoid abnormal conditions such as jamming caused by the difference in thermal expansion and contraction between the heat-insulating tubing 11 and the small tubing 13. The structural design of the jet pump 15 of the present application not only enables the jet pump to adapt to temperature changes under different working conditions, ensures stable operation in a high-temperature environment, enhances the reliability and service life of the equipment, but also achieves the purpose of completing the injection-production process without moving the tubing string.

[0026] Preferably, the length range of the plunger 153 can be 8-10m, which can ensure that during the injection process of high-temperature fluid, the length difference caused by thermal expansion and contraction between the inner and outer pipe strings can be compensated. At the same time, the sealing surface gap between the plunger 153 and the outer pump barrel 151 can be 0.15-0.25mm, which not only ensures the rationality of the leakage amount during the production process but also allows the plunger 153 to move freely within the outer pump barrel 151, avoiding the phenomenon of pipe string jamming due to thermal expansion, thereby further reducing the jamming risk and improving the stability of the production process.

[0027] According to the present invention, in a preferred embodiment as shown in Figure 1 , the production pipe string section 102 may further include a high-temperature resistant safety valve 17 connected to the outer pump barrel 151 of the jet pump 15. By setting the high-temperature resistant safety valve 17, the opening and closing of the production channel 19 (as shown in Figure 3 ) can be controlled during normal production, and the oil and gas channel can be quickly cut off in case of abnormal conditions, ensuring the safety of downhole operations and reducing potential risks.

[0028] Preferably, as shown in Figure 1 , a common oil pipe 14 may be connected between the heat-insulating oil pipe 11 and the outer pump barrel 151, and a conversion joint 16 is connected between the outer pump barrel 151 and the high-temperature resistant safety valve 17. This structural design makes the connection of the entire pipe string more flexible and reliable, facilitating installation and maintenance, and at the same time ensuring the smoothness of fluid transmission.

[0029] In a preferred embodiment as shown in Figure 1 , a hot production packer 4 is installed on the heat-insulating oil pipe 11, and a hot production gas release valve 3 may be provided on the hot production packer 4. The integrated production and injection process pipe string 100 of the workover rig jet pump may further include a nitrogen injection mode: nitrogen enters the wellbore through the hot production gas release valve 3 on the hot production packer 4 from the annulus between the production casing 101 and the heat-insulating oil pipe 11 to reduce the temperature of the downhole annulus. The hot production gas release valve 3 on the hot production packer 4 can inject high-purity nitrogen during hot injection, reducing the temperature of the oil-casing annulus, effectively protecting the annulus casing, extending the service life of the casing, and reducing maintenance costs.

[0030] Preferably, a constant pressure opening valve 12 may also be provided on the hot production packer 4. The constant pressure opening valve 12 can be automatically opened or closed according to the pressure change, which helps to maintain the pressure balance in the annulus between the production casing 101 and the heat-insulating oil pipe 11, ensuring the stability and safety of the production process and avoiding equipment damage or production interruption caused by abnormal pressure.

[0031] According to the present invention, in a preferred embodiment as shown in Figure 1In the preferred embodiment shown, the integrated injection-production process string 100 of the stationary workover rig jet pump may further include a hydraulic control pipeline assembly. The hydraulic control pipeline assembly may include a first hydraulic control pipeline 6 for controlling the opening and closing of the first outlet 72 of the heat injection bypass valve 7, a second hydraulic control pipeline 1 for controlling the setting of the thermal recovery packer 4, a third hydraulic control pipeline 2 for controlling the opening and closing of the thermal recovery gas release valve 3, and a fourth hydraulic control pipeline 10 for controlling the opening and closing of the high-temperature resistant safety valve 19. The setting of the hydraulic control pipeline assembly realizes the remote control of the heat injection bypass valve 7, the thermal recovery packer 4, the thermal recovery gas release valve 3, and the high-temperature resistant safety valve 19, improves the convenience and automation of operation, reduces manual intervention, and lowers the operation risk.

[0032] Figure 5 FIG. shows a flow chart of the integrated injection-production process method of the stationary workover rig jet pump according to an embodiment of the present invention. As Figure 5 shown, the integrated injection-production process method of the stationary workover rig jet pump uses the above-mentioned integrated injection-production process string 100 of the stationary workover rig jet pump, and may include the following steps: Step S1: As Figure 1 shown, lower the integrated injection-production process string 100 of the stationary workover rig jet pump into the well and install the wellhead penetrator 9, and the pressure test is qualified; Step S2: Pressurize through the second hydraulic control pipeline 1 to set the thermal recovery packer 4 to seal the annulus between the production casing 101 and the heat-insulating tubing 11; Step S3: Open the first outlet 72 of the heat injection bypass valve 7 through the first hydraulic control pipeline 6 to start the heat injection mode, and the heat injection fluid finally injects into the formation through the injection allocation valve 20, and the injection allocation valve 20 is connected to the guide shoe 21; Step S4: After the heat injection is completed, close the wellhead for soaking the well to enable the formation to fully absorb heat, improve the fluidity of the crude oil, and prepare for subsequent production. After the soaking of the well is completed, close the first outlet 72 of the heat injection bypass valve 7 through the first hydraulic control pipeline 6, open the high-temperature resistant safety valve 19 through the fourth hydraulic control pipeline 10, and the formation produced fluid under the action of the formation pressure passes through the production string section 102, the second outlet 73 of the heat injection bypass valve 7, and the annulus between the heat-insulating tubing 11 and the small tubing 13 in sequence, and returns to the wellhead to realize the flowing production; Step S5: After the flowing production is completed, put into the production pump core of the jet pump, and inject the power fluid through the surface piston pump. The power fluid descends through the small tubing 13, enters the production pump core of the jet pump, generates negative pressure, sucks in the formation produced fluid, and the mixed fluid then passes through the high-temperature resistant safety valve 17, the adapter 16, the jet pump 15, the second outlet 73 of the heat injection bypass valve 7, and the annulus between the heat-insulating tubing 11 and the small tubing 13 in sequence, and returns to the wellhead to complete the oil and gas production.

[0033] The integrated injection-production process method of the stationary workover rig jet pump in the embodiment of the present invention uses an integrated string, can complete multiple operation links such as heat injection, soaking the well, flowing production and jet pump production, does not need to replace the string, realizes the efficient, continuous and safe operation of the heavy oil thermal recovery, greatly improves the production efficiency, and reduces the operation cost.

[0034] Further, in step S3, it may further include simultaneously controlling the opening of the thermal recovery gas release valve 3 through the third liquid control pipeline 2 to turn on the nitrogen injection mode. By injecting high-purity nitrogen into the annulus between the production casing 101 and the heat-insulating tubing 11, the annulus temperature can be reduced to protect the underground casing.

[0035] It should be noted that unless otherwise specified, the technical terms or scientific terms used in this application should have the ordinary meanings understood by those skilled in the art to which this invention pertains.

[0036] In the description of this application, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features.

[0037] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered by the scope of the claims and the description of the present invention. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present invention is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A jet pump integrated injection-production process string for a stationary workover rig, characterized in that, Comprising: Production casing, A first heat injection pipe string section located within the production casing, the first heat injection pipe string section including a heat-insulating tubing and a small tubing sleeved within the heat-insulating tubing, A heat injection bypass valve connected to the bottom end of the first heat injection pipe string section, A second heat injection pipe string section connected to the heat injection bypass valve, the second heat injection pipe string section being connected to an injection allocation valve within the formation, and A production pipe string section connected to the heat injection bypass valve, Wherein, the heat injection bypass valve includes a first inlet connected to the heat-insulating tubing, a first outlet connected to the second heat injection pipe string section, and a second outlet connected to the production pipe string section. The workover rig jet pump injection-production integrated process pipe string includes a heat injection mode: the heat injection fluid sequentially passes through the annulus between the heat-insulating tubing and the small tubing, the first inlet, the first outlet, and enters the second heat injection pipe string section until the injection allocation valve; and a production mode: the produced fluid from the formation sequentially returns to the wellhead through the production pipe string section, the second outlet, and the annulus between the heat-insulating tubing and the small tubing.

2. The integrated injection and production process string of the stationary workover rig jet pump according to claim 1, wherein The production pipe string section includes a jet pump connected to the second outlet. The jet pump includes an outer pump barrel connected to the heat-insulating tubing, an inner pump barrel connected to the small tubing, and a plunger coaxially connected to the inner pump barrel. The outer diameters of the inner pump barrel and the plunger are the same, such that the inner pump barrel and the plunger can freely extend within the outer pump barrel.

3. The integrated injection-production process string of the stationary workover rig jet pump according to claim 2, characterized in that, The sealing surface gap between the plunger and the outer pump barrel is 0.15 - 0.25 mm.

4. The integrated injection-production process string of the stationary workover rig jet pump according to claim 2 or 3, characterized in that The production pipe string section further includes a high-temperature resistant safety valve connected to the outer pump barrel of the jet pump.

5. The integrated injection-production process string of the stationary workover rig jet pump according to claim 4, characterized in that, An ordinary tubing is connected between the heat-insulating tubing and the outer pump barrel, and a conversion joint is connected between the outer pump barrel and the high-temperature resistant safety valve.

6. The integrated injection and production process string of the stationary workover rig jet pump according to claim 4, characterized in that, A thermal recovery packer is installed on the heat-insulating tubing, and a thermal recovery gas release valve is provided on the thermal recovery packer. The workover rig jet pump injection-production integrated process pipe string further includes a nitrogen injection mode: nitrogen enters the wellbore through the thermal recovery gas release valve on the thermal recovery packer from the annulus between the production casing and the heat-insulating tubing to reduce the temperature of the downhole annulus.

7. The integrated injection and production process string of the jet pump for the stationary workover rig according to claim 6, characterized in that, A constant pressure opening valve is further provided on the thermal recovery packer.

8. The integrated injection-production process string of the stationary workover rig jet pump according to claim 6, characterized in that, The workover rig jet pump injection-production integrated process pipe string further includes a hydraulic control pipeline assembly. The hydraulic control pipeline assembly includes a first hydraulic control pipeline for controlling the opening and closing of the first outlet of the heat injection bypass valve, a second hydraulic control pipeline for controlling the setting of the thermal recovery packer, a third hydraulic control pipeline for controlling the opening and closing of the thermal recovery gas release valve, and a fourth hydraulic control pipeline for controlling the opening and closing of the high-temperature resistant safety valve.

9. An integrated injection and production process method for a jet pump of a stationary workover rig, which uses the integrated injection and production process string of a jet pump of a stationary workover rig according to any one of claims 1 to 8, characterized in that, Including the following steps: Step 1: Lower the workover rig jet pump injection-production integrated process pipe string into the well and test it for pressure tightness; Step 2: Pressurize through the second hydraulic control pipeline to set the thermal recovery packer to seal the annulus between the production casing and the heat-insulating tubing; Step 3: Open the first outlet of the heat injection bypass valve through the first hydraulic control pipeline to activate the heat injection mode; Step 4: After the heat injection is completed, close the wellhead for soaking. After the soaking is completed, close the first outlet of the heat injection bypass valve through the first hydraulic control pipeline, and open the high-temperature resistant safety valve through the fourth hydraulic control pipeline for flowing production; Step 5: After the flowing production is completed, insert the jet pump production pump core and inject power fluid through the surface plunger pump to make the jet pump work to start the production mode.

10. The integrated injection and production process method of the jet pump for the stationary workover rig according to claim 9, characterized in that, In Step 3, it also includes simultaneously controlling the opening of the thermal recovery gas vent valve through the third hydraulic control pipeline to start the nitrogen injection mode.

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