Cable continuous pipe drilling and production process method for yield increasing and potential tapping

Abstract

The invention discloses a cabled continuous pipe drilling and production process method for yield increasing and potential tapping. The method comprises the following steps that a well is selected, and a well site is arranged; the well hole is subjected to continuous pipe dredging, scraping, washing and fishing integrated operation treatment; a drilling downhole tool string is installed, and drilling work is conducted through cable continuous pipe electric drive; a perforation downhole tool string is installed, and perforation work is conducted through the cable continuous pipe; a fracturing downhole tool string is installed, and fracturing operation is conducted through a packer; well completion operation is carried out through the cabled continuous pipe with the slotted liner pipe; putting into a well through a cable continuous pipe with an electric submersible pump; and electrifying to start the electric submersible pump to carry out drainage and oil production operation. The cable continuous pipe drilling and production integrated technology is adopted for deepening, fracturing and reservoir transformation of the old oil well, connection of a single oil pipe is not needed, the continuous pipe lifting and lowering operation procedures are safe and simple, snubbing operation is achieved, deepening, yield increasing and potential tapping of the old well are achieved, the single-well yield of the old oil well is improved, and the construction efficiency, operation cost and operation safety of old well transformation are improved.

Description

Technical Field

[0001] This invention belongs to the field of petroleum industry's technology for improving the production of old oil wells, and relates to a method for drilling and producing with continuous tubing for increasing production potential. Background Technology

[0002] Coiled tubing drilling technology is a new drilling technology that developed rapidly in the 1990s. After more than 30 years of rapid development and continuous improvement, it has become a representative of high-end coiled tubing operation technology in the 21st century. This technology features seamless operation, rapid and continuous tripping, high data transmission speed during pressurized and cabled operations, and a small footprint. It does not require modification to the existing wellbore and pipeline network, saving costs and improving economic efficiency, and has become an important direction for the development of oil drilling technology.

[0003] Compared with conventional processes, the main advantages of coiled tubing drilling technology are: 1) In re-drilling of old wells, especially in deepening or sidetracking operations, the small diameter of the coiled tubing allows for tubing operations without removing existing production equipment from the old well, enabling simultaneous drilling and production and significantly saving drilling costs. 2) It enables underbalanced drilling operations, reducing mud loss and preventing formation damage; continuous mud circulation during tripping reduces tripping time and work cycles, improving tripping speed and operational safety. 3) The coiled tubing can be equipped with internal cables, improving signal transmission while drilling and enabling complete logging while drilling, which is beneficial for achieving closed-loop drilling. 4) Fewer surface equipment is required, equipment mobility is good, installation and disassembly are easy, saving time and increasing safety; it is particularly suitable for small-diameter drilling, easily improving the automation level of the drilling process, reducing the need for equipment and manpower, and lowering operating costs.

[0004] my country has over 100,000 old wells and dormant wells in its old oilfields. Identifying, analyzing the potential of, drilling, and developing these old and dormant wells, and breaking their dormancy seals, is of great significance for revitalizing their potential. However, in conventional drilling operations, drilling, completion, and oil production are relatively independent processes. After drilling is completed, well cleaning and fluid replacement are usually required before the completion tubing is installed, resulting in a relatively long construction cycle and complex procedures. Researching integrated equipment and methods for deepening and completing old wells using coiled tubing drilling, combined with the characteristics of deepening old wells to increase single-well production, could reduce drilling and completion costs, tap into early-stage overlooked layers and reservoirs with low economic value, increase single-well production in old oilfields, and achieve the goal of increasing production in old oilfields. Summary of the Invention

[0005] The purpose of this invention is to provide a continuous cable drilling and production process for increasing oil production potential, which solves the problems of high oil production cost and low efficiency in the existing technology.

[0006] The technical solution adopted in this invention is a method for increasing production and tapping potential using continuous cable drilling, comprising the following steps: Step 1: Select wells and set up well sites; Step 2: Perform a continuous tubing cleaning-scraping-washing-retrieval integrated operation on the wellbore; Step 3: Install the drilling downhole tool string and carry out drilling operations via cabled coiled tubing electric drive; Step 4: Install the perforation downhole tool string and perform perforation work through the cabled coiled tubing; Step 5: Install the fracturing downhole tool string and perform fracturing operations using a packer; Step 6: Well completion operations are performed using a continuous cabled tubing with slotted liner. Step 7: The submersible pump is lowered into the well via a cabled continuous tubing. Step 8: Power on the electric submersible pump to start drainage and oil production operations.

[0007] The invention is further characterized by: Well selection involves combining geological conditions and reservoir characteristics to select wells for reservoir stimulation, clarifying the well structure, well conditions, tubing, casing, downhole tool specifications and quantities, and determining geological data and deeping stimulation design schemes based on well selection.

[0008] The well site layout involves surveying the well site roads, relocating the construction facilities to the well site, placing and installing the operating equipment using coiled tubing with built-in cables, checking whether the operating equipment is operating normally, and preparing well washing fluid and drilling fluid.

[0009] The continuous cable conduit is 2000-2500 meters long, with a specification of Φ73×5.2mm and a steel grade of CT90.

[0010] The drilling process involves installing the downhole tool string, maintaining it in a circulating state, slowly lowering the coiled tubing, and starting the pump to circulate when the drill bit is 2-3 meters from the bottom of the well. The drill bit is then used to break in the cement plug. Once the formation is reached, the drill bit is fed evenly for drilling. Power and communication signals are transmitted via cables on the coiled tubing. The surface receives measurement data and sends control commands to the electric motor and guide section. The process includes deepening to the designed depth, circulating the tubing, handling stuck drill bit issues, and using electrical control to reverse the drill bit's rotation to release it.

[0011] Perforation specifically involves installing the downhole perforation tool string, using a locator to determine the depth of the downhole perforation tool string, and when the perforation gun is positioned at the lowest predetermined perforation section, an electrical signal is sent through the cable on the coiled tubing to trigger the ignition device, detonating the perforation projectile and completing the perforation. Then, the coiled tubing is lifted to the predetermined perforation section, and the perforation operation is completed sequentially from bottom to top.

[0012] The fracturing process involves lowering a fracturing tool string into the well using a cabled coiled tubing. The depth of the fracturing tool string is determined by a locator. The fracturing tool string is positioned at the lowest predetermined fracturing layer by crossing the packer. An electrical signal is sent via the cable on the coiled tubing to seal the wellbore and initiate coiled tubing fracturing. After fracturing is completed, an electrical signal is sent via the cable to lift the coiled tubing and release the packer. The process is then repeated to the next layer for fracturing. This process is repeated until all layers are fracturing.

[0013] Well completion specifically involves running the slotted liner to the designed depth, separating the coiled tubing from the liner, leaving the slotted liner inside the wellbore, and then pulling out the coiled tubing.

[0014] The process of lowering an electric submersible pump into the well involves a composite suspension sealing device at the wellhead. A continuous cable is suspended and sealed on the suspension device. The continuous cable, along with the pump unit, is lowered into position. The wellhead suspension device then sets and seals the continuous cable. The continuous cable above the suspension device is then cut off, and the cable passes through the top of the suspension device and connects to the surface power system.

[0015] The drainage and oil production operation involves starting the electric submersible pump, allowing the fluid in the well to pass through the flow hole into the coiled tubing and then be pumped out of the wellhead.

[0016] The beneficial effects of this invention are: 1. This invention adopts a cable-connected coiled tubing drilling and production integrated process to replace the traditional drilling, completion, and oil production process. It uses a built-in cable coiled tubing and supporting tools and processes to realize an integrated operation of unblocking-scraping-washing-retrieval, electric-driven drilling for deepening old wells, perforation-fracturing-slotted liner installation, and coiled tubing with an electric submersible pump for drainage and oil production.

[0017] 2. This invention employs a cabled coiled tubing drilling and production integrated process to deepen, fracturize, and reservoir in old oil wells. It eliminates the need for individual tubing connections, making the coiled tubing tripping and running operations safe and simple. This enables operations without well control, reducing workload, time, and land use. It deepens and increases the production potential of old wells, improving the efficiency, cost, and safety of old well renovation, ultimately achieving the goal of improving quality and efficiency.

[0018] 3. This invention fully utilizes the advantages of coiled tubing in drilling, completion, and oil production processes, including its ability to operate under pressure and rapid tripping, as well as the ability of the internal cable to transmit both electrical and communication signals simultaneously. This enables real-time bidirectional information transmission between the wellbore and the surface, allowing surface operators to accurately understand the wellbore situation at the earliest possible time. It boasts a high level of automation and requires fewer operators. Furthermore, the cable in the coiled tubing can convert electrical energy into heat energy to directly heat the produced oil, improving crude oil fluidity, preventing wax buildup on the tubing wall, reducing crude oil viscosity, and increasing oil recovery. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the process for increasing production and tapping potential using cabled continuous tubing drilling and production technology of the present invention; Figure 2 This is a schematic diagram of the drilling downhole tool string for the cabled continuous tubing drilling and production process method of the present invention for increasing production potential. Figure 3 This is a schematic diagram of the perforated downhole tool string for the cabled continuous tubing drilling and production process of the present invention for increasing production potential. Figure 4 This is a schematic diagram of the fracturing downhole tool string for the cabled continuous tubing drilling and production process of the present invention for increasing production potential. Figure 5 This is a schematic diagram of a slotted liner pipe string for the cabled continuous pipe drilling and production process method for increasing production potential in this invention. Figure 6 This is a schematic diagram of the electric submersible pump string combination for the cabled continuous tubing drilling and production process of the present invention for increasing production potential. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0021] like Figure 1 As shown, the method for increasing production potential using continuous tubing drilling includes the following steps: Step 1: Select wells and set up well sites; Based on geological conditions and reservoir characteristics, select wells for reservoir stimulation, clarify the well structure, well conditions, tubing, casing, downhole tool specifications and quantities, and determine geological data and deeping stimulation design schemes according to well selection; conduct well site road surveys, relocate construction facilities to the well site, place and install operating equipment using coiled tubing with built-in cables, check whether the operating equipment is operating normally, and prepare well washing fluid and drilling fluid.

[0022] Step 2: Perform a continuous tubing cleaning-scraping-washing-retrieval integrated operation on the wellbore; The continuous cable conduit is 2000-2500 meters long, with a specification of Φ73×5.2mm and a steel grade of CT90.

[0023] Step 3: Install the drilling downhole tool string and carry out drilling operations via cabled coiled tubing electric drive; As shown in Figure 2, the downhole drilling tool assembly, from top to bottom, consists of coiled tubing, connector, non-rotating joint, cable sub connector, check valve, electric safety release, logging-while-drilling tool, electric guide sub, electric motor unit, and drill bit. After the downhole tool string is installed, it is kept in circulation. The coiled tubing is slowly lowered, and when the drill bit is 2-3 meters from the bottom of the well, the pump is started to circulate the tubing. The drill bit is then used to break in the cement plug. After reaching the formation, the drill bit is fed evenly. Power and communication signals are transmitted through the cable on the coiled tubing. The surface receives measurement data and sends control commands to the electric motor and guide sub. The drilling process is monitored, including deepening to the designed depth, tubing circulation, tripping, and handling stuck drill bits. The electrical control system rotates the drill bit in the opposite direction to release the stuck drill bit.

[0024] Step 4: Install the perforation downhole tool string and perform perforation work through the cabled coiled tubing; like Figure 3 As shown, the downhole perforation tool assembly consists of, from top to bottom, a coiled tubing, connector, cable short joint, check valve, electric safety release, positioner, electric igniter, and perforating gun. After the downhole perforation tool string is installed, the positioner is used to determine the insertion depth of the downhole perforation tool string. When the perforating gun is positioned at the lowermost predetermined perforation section, an electrical signal is sent through the cable on the coiled tubing to trigger the ignition device, detonating the perforating charge and completing the perforation. Then, the coiled tubing is pulled up to the predetermined perforation section, and the perforation operation is completed sequentially from bottom to top.

[0025] Step 5: Install the fracturing downhole tool string and perform fracturing operations using a packer; like Figure 4 As shown, the downhole fracturing tool assembly, from top to bottom, consists of a coiled tubing, connector, cable short joint, electric safety release, locator, and a straddle-type electro-hydraulic cable bridge plug double packer. The straddle-type electro-hydraulic cable bridge plug double packer includes an upper electric packer, a nozzle, and a lower electric packer. The fracturing tool string is lowered into the well via the coiled tubing, and the locator determines the depth of the fracturing tool string. The cross packer positions the tool string to the lowermost predetermined fracturing layer. An electrical signal is transmitted via the cable on the coiled tubing to seal the wellbore and initiate coiled tubing fracturing. After fracturing is completed, an electrical signal is transmitted via the cable to lift the coiled tubing and release the packer. The assembly then moves to the next layer for fracturing, and this process is repeated until all layers are fracturing.

[0026] Step 6: Well completion operations are performed using a continuous cabled tubing with slotted liner. like Figure 5As shown, a cabled coiled tubing with a slotted liner is lowered into the well for well completion. The tool assembly, from top to bottom, consists of the cabled coiled tubing, connector, cable short joint, locator, electric safety release, connector short joint, and slotted liner. The slotted liner is lowered to the designed depth, the coiled tubing and liner are separated, the slotted liner is left in the wellbore, and the coiled tubing is retrieved.

[0027] Step 7: The submersible pump is lowered into the well via a cabled continuous tubing. like Figure 6 As shown, a cabled coiled tubing system is used for drainage and oil production with an electric submersible pump. The tool assembly, from top to bottom, consists of a cable suspension device, cabled coiled tubing, connector, sealing sleeve, conversion sub, cable sub joint, downhole motor, and downhole pump unit. The downhole pump is lowered into the well by a composite suspension and sealing device at the wellhead. The cabled coiled tubing is suspended and sealed on the suspension device. The cabled coiled tubing, along with the downhole pump unit, is lowered into position. The wellhead suspension device sets and seals the cabled coiled tubing. The coiled tubing above the suspension device is then cut, and the cable passes through the top of the suspension device and connects to the surface power system.

[0028] Step 8: Power on the electric submersible pump to start drainage and oil production operations; After the electric submersible pump is turned on, the fluid in the well reaches the inside of the coiled tubing through the flow orifice and is pumped out of the wellhead.

[0029] Example 1 The drilling process specifically includes the following steps: Well selection and construction data preparation were carried out. Suitable old wells for reservoir stimulation were selected, with an artificial well bottom depth of 1121 meters, divided into three sub-layers: 984-991m, 1031-1038m, and 1077-1084m. A vertical well was constructed to deepen the well to 382 meters within a φ139mm casing. Four stages of perforation and fracturing were performed in the deepened section, with designed depths of 1325-1329 meters, 1362-1370 meters, 1411-1414 meters, and 1418-1423 meters.

[0030] Well site layout and operational preparation. Survey and maintain well site roads, relocate construction facilities to the well site, including the coiled tubing installation machine, surface power supply system, surface manifold, tool shed, water tank, water pool, fire safety facilities, and living quarters; prepare well-washing fluid and drilling fluid according to design requirements; arrange and install various operating equipment according to the coiled tubing operation site and check for normal operation; the coiled tubing uses internal cable coiled tubing, with a length of 2000-2500 meters, specifications of Φ73×5.2mm, and steel grade CT90. Remove burrs from the inner weld seams of the coiled tubing; the height of the inner burrs in the tubing body should be less than 0.5mm to prevent damage to the cable from the inner weld seams; the multi-core cable has an outer diameter of 19.6mm and is capable of transmitting power, communication signals, and heating functions.

[0031] Treat the old wellbore. Install coiled tubing wellhead workover equipment, including, from top to bottom, assembling the injection head, blowout preventer, coiled tubing and tool string, blowout preventer pipe, flat valve and casing four-way valve, and wellhead conversion flange. Pressure test the coiled tubing, blowout preventer pipe and blowout preventer. Run the integrated cleaning-scraping-washing-retrieval tool into the well. The tool has a maximum diameter of 134mm. Circulate the cleaning fluid into the coiled tubing to clean it until it reaches the artificial bottom of the well. If there are foreign objects such as failed sucker rods, pumps, or tools in the well, start the electric retrieval tool. Use the electrical control system to drive the mechanical system gripper to grasp the foreign object, lift the coiled tubing to retrieve the foreign object, and then run it back into the well to complete the cleaning operation.

[0032] Install the drilling downhole tool string. The downhole drill string assembly is connected from top to bottom as follows: φ73mm cabled coiled tubing, φ101.5mm coiled tubing connector, φ79mm non-rotary joint, cable short joint, check valve, electric safety release, logging-while-drilling tool, electric steering short, electric motor unit, and φ118mm PDC drill bit.

[0033] Conduct drilling operations. Maintain circulation and slowly lower the coiled tubing. When the tool string passes through the wellhead, bottom of the well, and various sections with internal diameter restrictions, control the speed to within 5 m / min. For other sections, control the speed to 10-20 m / min. Raise the drill string 50m at a time, then raise it 50m at a time. If no abnormalities are observed, continue lowering the drill string to explore the artificial well bottom. Slowly lower the drill string to the bottom of the well. When the drill bit is 2-3m away from the bottom of the well, start the pump to circulate the drill fluid, gradually increasing the flow rate to adjust the drilling fluid properties. Slowly lower the drill string to the bottom of the well to break in the drill bit and drill the cement plug. The drilling fluid is transported to the downhole drill bit through the cabled coiled tubing and sprayed out by the drill bit to clean the bottom of the well and carry rock cuttings up the annulus to the surface. A one-way valve controls the unidirectional flow of the drilling fluid. After reaching the formation, the drilling pressure is 28-32KN and the rotation speed is 150-180rpm. Drill evenly. The cable simultaneously transmits power and communication signals. The surface receives measurement data and sends control commands to the electric motor and guide sub. Vertically deepen to the design depth of 382 meters, then circulate and pull out the tubing.

[0034] Example 2 Based on Example 1, the well completion process includes the following steps: Install the downhole perforation tool string. The downhole perforation tool assembly is connected from top to bottom as follows: φ73mm cabled coiled tubing, φ101.5mm coiled tubing connector, cable short joint, check valve, electric safety release, positioner, electric igniter, and φ76mm high-density perforating gun.

[0035] Perforation operations were carried out. A φ73mm cabled coiled tubing with a tool string was lowered into the well. The depth of the tool string was determined using a locator. When the perforating gun reached the perforation section at 1418-1423 meters, surface pressure was applied to complete the perforation. The coiled tubing was then pulled up to the 1412-meter, 1364-meter, and 1327-meter perforations, completing the perforation operations sequentially from bottom to top. The cabled coiled tubing was then retrieved. According to the process design requirements, four perforations were completed in the newly drilled section.

[0036] Install the downhole fracturing tool string. The downhole fracturing tool assembly is connected from top to bottom as follows: φ73mm cabled coiled tubing, φ101.5mm coiled tubing connector, cable short joint, electric safety release, positioner, upper electric packer, Φ6mm diameter nozzle, and lower electric packer.

[0037] Fracturing operations are carried out. A coiled tubing tool string is lowered into the well. A locator is used to determine the depth of the tool string. A straddle-type electro-hydraulic cable-operated plug packer is positioned at the predetermined fracturing zone at 1416 meters. An electrical signal is transmitted via cable to cause the compression deformation components of the lower electric packer and the cups and slips of the upper electric packer to seal the wellbore. After the packer is verified as sealed, a water-based low-concentration polymer cross-linked with borate or titanate is selected as the fracturing fluid for the coiled tubing fracturing process. 20-40 mesh quartz sand is used as proppant. The fracturing fluid flow rate in the coiled tubing is 1.5-2.0 m³ / min, the sand concentration in the fracturing fluid is 1400-1800 kg / m³, and the surface pressure during fracturing is 35-40 MPa. After fracturing is completed, the pump is stopped, an electrical signal is sent via the cable, the coiled tubing is pulled up to release the double packer, and then the pump is moved up to the second sub-layer at 1409 meters for fracturing. This process is repeated until the sub-layers at 1360 meters and 1323 meters are fracturing, at which point the coiled tubing is pulled out. According to the process design requirements, fracturing is performed four times in the new drilling section and three times in the old well section.

[0038] Insert the slotted liner. Select a 10m long N80 slotted liner with a specification of Φ110×6.6mm. The slot length of the slotted liner is generally 200mm, the slot width is 2mm, and the cross-section of the slot is trapezoidal with an included angle of approximately 12° between the two hypotenuses. Open the coiled tubing wellhead, suspend and install the 15 slotted liners in sequence, and lower them into the well, suspending them at the wellhead. Install the coiled tubing wellhead, and lower the cabled coiled tubing with the slotted liners into the well. The tool assembly is connected from top to bottom as follows: φ73mm cabled coiled tubing, φ101.5mm coiled tubing connector, cable short joint, locator, electric safety release, connector short joint, and slotted liner string. Slowly lower the coiled tubing, using the locator to determine the depth of the slotted liner string, probing the bottom of the well. After confirming that the slotted liner string has reached the bottom of the well, separate the coiled tubing and the liner using the electric safety release, leaving the slotted liners in the wellbore, and then retrieve the coiled tubing.

[0039] Example 3 Based on Example 2, the oil extraction process includes the following steps: The electric submersible pump (ESP) is lowered. A cable-stayed coiled tubing system is used for drainage and oil production. The tool assembly, from top to bottom, consists of a cable suspension device, a φ73mm cabled coiled tubing, a φ101.5mm coiled tubing connector, a sealing sleeve, a conversion sub, a cable sub joint, a downhole motor, and a screw pump unit. A composite suspension sealing device is installed at the wellhead, with the coiled tubing suspended and sealed on the suspension device. The cable-stayed coiled tubing with the downhole pump unit is lowered to a depth of 834 meters. The wellhead suspension device sets and seals the coiled tubing. The coiled tubing above the suspension device is cut, and the cable passes through the top of the suspension device. A wellhead tee is installed to the coiled tubing hanger, and the cable is connected to the surface power system, completing the lowering of the downhole pump unit.

[0040] Electric submersible pumps (ESPs) are used for drainage and oil production. When the ESP is powered on, the fluid in the well flows through the flow orifice into the coiled tubing and is pumped out of the wellhead, thus enabling drainage and oil production. The cables in the coiled tubing can heat the produced oil, reducing the viscosity of the crude oil and preventing wax buildup on the tubing walls.

Claims

1. A method for increasing production and tapping potential using continuous cable drilling and extraction, characterized in that, Includes the following steps: Step 1: Select wells and set up well sites; Step 2: Perform a continuous tubing cleaning-scraping-washing-retrieval integrated operation on the wellbore; Step 3: Install the drilling downhole tool string and carry out drilling operations via cabled coiled tubing electric drive; Step 4: Install the perforation downhole tool string and perform perforation work through the cabled coiled tubing; Step 5: Install the fracturing downhole tool string and perform fracturing operations using a packer; Step 6: Well completion operations are performed using a continuous cabled tubing with slotted liner. Step 7: The submersible pump is lowered into the well via a cabled continuous tubing. Step 8: Power on the electric submersible pump to start drainage and oil production operations.

2. The method for increasing production potential using cabled continuous tubing drilling and production technology according to claim 1, characterized in that, The well selection process involves combining geological conditions and reservoir characteristics to select wells for reservoir stimulation, clarifying the well structure, well conditions, tubing, casing, downhole tool specifications, and quantity of downhole tools, and determining geological data and deeping stimulation design schemes based on the selected wells.

3. The method for increasing production potential using continuous wireline drilling and production as described in claim 1, characterized in that, The well site layout involves surveying the well site roads, relocating construction facilities to the well site, placing and installing operating equipment using coiled tubing with built-in cables, checking whether the operating equipment is operating normally, and preparing well washing fluid and drilling fluid.

4. The method for increasing production potential using continuous wireline drilling and production as described in claim 1, characterized in that, The continuous cable conduit is 2000-2500 meters long, with a specification of Φ73×5.2mm and a steel grade of CT90.

5. The method for increasing production potential using continuous wireline drilling and production as described in claim 1, characterized in that, The drilling process specifically involves the following steps: After the downhole tool string is installed, it is kept in a circulating state. The coiled tubing is slowly lowered, and when the drill bit is 2-3 meters from the bottom of the well, the pump is started to circulate the tubing. The drill bit is then used to break in the cement plug. Once the formation is reached, the drill bit is fed evenly for drilling. Power and communication signals are transmitted through the cable on the coiled tubing. The ground receives measurement data and sends control commands to the electric motor and guide section. The drilling process is monitored, including drilling to the designed depth, tubing circulation, and handling of stuck drill bits. The electrical control system rotates the drill bit in the opposite direction to release the stuck drill bit.

6. The method for increasing production potential using cabled continuous tubing drilling and production technology according to claim 1, characterized in that, The perforation process specifically involves the following steps: after the downhole perforation tool string is installed, the locator is used to determine the depth of the downhole perforation tool string. When the perforation gun is positioned at the lowest predetermined perforation section, an electrical signal is sent through the cable on the coiled tubing to trigger the ignition device, detonating the perforation projectile and completing the perforation. Then, the coiled tubing is lifted to the predetermined perforation section, and the perforation operation is completed sequentially from bottom to top.

7. The method for increasing production potential using continuous wireline drilling and production as described in claim 1, characterized in that, The fracturing process specifically involves lowering a fracturing tool string into the well using a cabled coiled tubing. The depth of the fracturing tool string is determined using a locator. The fracturing tool string is positioned at the lowest predetermined fracturing layer via the packer. An electrical signal is sent through the cable on the coiled tubing to seal the wellbore and initiate coiled tubing fracturing. After fracturing is completed, an electrical signal is sent through the cable to lift the coiled tubing and release the packer. The process is then moved to the next layer for fracturing. This process is repeated until all layers are fracturing.

8. The method for increasing production potential using cabled continuous tubing drilling and production technology according to claim 1, characterized in that, The well completion process specifically involves running the slotted liner to the designed depth, separating the coiled tubing and the liner, leaving the slotted liner inside the wellbore, and then pulling out the coiled tubing.

9. The method for increasing production potential using continuous wireline drilling and production as described in claim 1, characterized in that, The electric submersible pump is lowered into the well by a composite suspension sealing device at the wellhead. A cable-stayed tube is suspended and sealed on the suspension device. The cable-stayed tube and the downhole pump unit are lowered into place. The wellhead suspension device sets and seals the cable-stayed tube. The tube above the suspension device is cut off, and the cable passes through the top of the suspension device and connects to the surface power system.

10. The method for increasing production potential using wired continuous tubing drilling and production technology according to claim 1, characterized in that, The drainage and oil production operations specifically involve starting the electric submersible pump, allowing the liquid in the well to pass through the flow hole into the coiled tubing and then be pumped out of the wellhead.

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