CN105089624A - Dynamic Logging Method for Horizontal Well Coiled Tubing Delivery - Google Patents

Abstract

The invention provides a dynamic well logging method for horizontal well coiled tubing transportation. The logging method includes the following steps: pulling out the original well string, draining the well, and washing the well; running the coiled tubing of the horizontal well into the casing for the dynamic logging process: from bottom to top: bell mouth, tubing, and horizontal well Test that the hollow pump, packer, anti-jack device, disconnector and tubing are connected in sequence, the tubing is connected to the wellhead, the packer is seated, the anti-jack device is anchored, and the tubing string is disconnected from the disconnector; the wellhead guide is installed Device; coiled tubing running into horizontal wells to transport dynamic logging process rod string: the upper part of the downhole instrument is connected with a flexible sub, cable head, and coiled tubing, and the two ends of the downhole instrument are connected with a downhole instrument centralizer; liquid drainage; the coiled tubing is used for testing ; Finally, take out the coiled tubing and the logging instrument. This logging method is used for horizontal well logging, and dynamic logging is realized. Coiled tubing is used for tripping, and the rigidity and toughness are good.

Description

Dynamic Logging Method for Horizontal Well Coiled Tubing Delivery

technical field

The invention relates to a dynamic logging method for horizontal well coiled tubing transportation, and belongs to the technical field of horizontal well logging in oil fields.

Background technique

At present, domestic and foreign horizontal well production logging generally adopts three methods: coiled tubing transportation, tractor transportation, and hydraulic transportation. Existing tubing transportation and hydraulic transportation need to pump liquid, and the liquid enters the formation, which directly affects the test results, and the input cost of tractor transportation and coiled tubing transportation is relatively high. It is urgent to find a testing process technology like vertical well logging.

Chinese patent literature "Coiled Tube Horizontal Well Logging Technology and Device" Publication No.: CN101382069A, Publication Date: March 11, 2009, using coiled tubing as a delivery tool for well logging downhole instruments, but for a large number of mechanically produced water For Hirao wells, it is currently impossible to conduct liquid production profile testing under normal production conditions.

Chinese patent document "Technical Method for Measuring Fluid Production Profile by Gas Lift Method in Mechanically Mined Horizontal Wells" Publication No.: CN101403292A, Publication Date: April 8, 2009, adopts the gas lift production method, drives the test instrument with a tractor, "mainly solves the current There is a problem that some horizontal wells cannot be tested for fluid production profiles under normal production conditions.” The disadvantage is that the gas lift production method not only requires special nitrogen generation trucks and compressor trucks, but also cannot truly reflect the normal production status of mechanically mined horizontal wells.

Chinese patent document "Mechanized Production Horizontal Well Preset Fluid Production Profile Testing Method and Special Test Wellhead Device" Publication No.: CN101403291A, Publication Date: April 8, 2009, "A combination of pre-set testing instruments and downhole tractors" method, combined with a special test wellhead device to realize the preset liquid production profile test of mechanically produced horizontal wells.” The disadvantage is that the whole process is relatively complicated.

Chinese patent document "Horizontal well tubing transportation testing method under swabbing state" publication number: CN101377127A, publication date: March 4, 2009, using conventional swabbing tool wire rope pumps for swabbing production and tubing transportation testing. The disadvantages are that the test cable is located outside the oil pipe, not only the whole tripping process is complicated, but also because of the leakage of the swabbing tool and the uncertainty of whether the testing instrument is out of the protection body, it cannot reflect the normal production status of the mechanically produced horizontal well.

Contents of the invention

In order to overcome the deficiencies of the prior art, the invention provides a dynamic well logging method for horizontal well coiled tubing delivery.

The invention provides a horizontal well coiled tubing transport dynamic logging process rod string, the horizontal well coiled tubing transport dynamic logging process rod string includes a horizontal well coiled tubing transport dynamic logging process string, a horizontal well Coiled tubing conveying dynamic logging process rod string, horizontal well testing dynamic lifting device; horizontal well coiled tubing conveying dynamic logging process pipes including horn mouth, tubing, horizontal well testing hollow pump, packer connected sequentially from bottom to top , anti-jack device, disconnector and tubing, and the tubing has been extended to the wellhead; horizontal well coiled tubing transmission dynamic logging process rod string includes coiled tubing, cable head, flexible sub, first downhole instrument centralizer connected in sequence , the downhole instrument and the second downhole instrument centralizer; the horizontal well testing dynamic lifting device includes a workover operation machine, a self-sealing well sealing device arranged on the top of the tubing, and a horizontal well testing hollow that is sequentially arranged on the tubing from bottom to top Pump, packer, anti-jack device, connecting rod and disconnector, tubing passes through self-sealing sealer.

Further, between the disconnector and the tubing, between the disconnector and the anti-jack device, between the anti-jack device and the packer, between the packer and the horizontal well test hollow pump, between the horizontal well test hollow pump and the horn The ports are connected by threads; the length of the connecting rod is 9.5m, the outer diameter is 48.3mm, and the inner diameter is 40mm, and the two ends of the connecting rod pass the M48×2.5 male buckle and the male head of the disconnector and the horizontal well test hollow pump hollow plunger connection.

Further, the wellhead of the coiled tubing is provided with a guide device, and the guide device includes a casing collar, a centered fixed pulley support plate, a centered fixed pulley, a centered fixed pulley shaft, a connecting plate, a guide pulley, a guide pulley shaft, a shaft pin, and a guide pulley Support plates, nuts, screw rods and pin shafts; two parallel rectangular centered pulley support plates are welded on the outer wall of the casing collar, and the center fixed pulley support plates are parallel to the center line of the casing collar; The upper end of a centered fixed pulley support plate is connected with a centered fixed pulley through the centered fixed pulley shaft, and the centered fixed pulley is in the middle of the two centered fixed pulley support plates; the bottom of the two centered fixed pulley support plates is connected with a pin shaft The screw joint has a shaft pin hole at one end of the screw joint and the lower part of the two centered fixed pulley support plates, and the pin shaft passes through the pin hole; there is a central screw hole at the other end of the screw joint, and the other end of the screw joint A screw is fixed in the center screw hole, and the center line of the joint of the screw is on the same straight line as the center line of the screw; a nut is arranged on the screw; a sliding sleeve is set on the lower part of the nut and on the screw, The lower ends of the two guide pulley support plates have repin holes, and the repin holes are provided with revolving pins; there is a guide pulley shaft in the shaft pin holes at the top of the two guide pulley support plates, and the two guide pulley supports There is a guide pulley in the middle of the plate; there is a pivot pin in the pivot pin hole in the middle of the two guide pulley support plates, and the pivot pin passes through the pivot pin hole in the middle of the two guide pulley support plates and the pivot pin hole at one end of the connecting plate; centered A pin shaft is worn in the pin shaft hole of the pulley support plate, and the other end of the connecting plate is connected to the two ends of the pin shaft.

Further, the screw rod includes a main body and a joint, the cross section of the main body is circular, the cross section of the joint is square, and the two guide pulley support plates are rectangular flat plates.

The invention provides a horizontal well coiled tubing delivery dynamic logging process rod string, which ensures the realization of the horizontal well continuous tubing delivery dynamic logging method.

The invention provides a coiled tubing wellhead guide device, which is used for horizontal well testing, ensures that the coiled tubing and cable joints pass through the wellhead smoothly, avoids the traveling block of the operating machine, and reduces the friction between the coiled tubing and the cable and the traveling block of the operating machine. Protect coiled tubing and cables to prevent abrasion of coiled tubing and cables.

The technical solution adopted by the present invention is: a dynamic logging method for horizontal well coiled tubing transportation,

First, pull out the original well string, pass through the well, and wash the well;

Secondly, run the dynamic logging process string of the horizontal well coiled tubing into the casing: from bottom to top: bell mouth, oil pipe, horizontal well test hollow pump, packer, anti-jack device, disconnector, oil pipe, oil pipe All the way to the wellhead, set the packer, anchor the anti-jack device, and disconnect the pipe string from the disconnector;

Third, install wellhead guides;

Fourth, the coiled tubing in the horizontal well is used to transport the dynamic logging process rod string: the upper part of the downhole instrument is connected with a flexible nipple, cable head, and coiled tubing, and the two ends of the downhole instrument are connected with a downhole instrument centralizer;

Fifth, drainage;

Sixth, the coiled tubing is used for testing;

Finally, pull out the coiled tubing and logging instruments;

Also includes the following steps:

Remove the guide pulley of the coiled tubing wellhead guide device, the coiled tubing passes through the hole on one end of the support plate of the guide pulley, install the guide pulley and the rotating screw rod, so that the guide pulley moves inward, and the coiled tubing and the operating machine swim After there is a certain distance between the moving blocks, the coiled tubing can be lowered; when the coiled tubing needs to be lowered, the nut is rotated to the end of the screw rod close to the screw joint; since the centering of the fixed pulley support plate, connecting plate, and guide pulley A quadrilateral is formed between the support plate and the screw joint, so that the guide pulley support plate is parallel to the central fixed pulley support plate, and the guide pulley support plate drives the guide pulley away from the top of the casing collar above the wellhead; at this time, the coiled tubing is in the center of the guide pulley The traction line leaves the top of the wellhead; after the coiled tubing starts working, the coiled tubing can avoid the traveling block of the operating machine to avoid the friction between the coiled tubing and the traveling block of the operating machine, and prevent the coiled tubing from being worn; then, the coiled tubing is guided by the centered fixed pulley Enter the wellhead, so that the coiled tubing will not rub against the wellhead casing or tubing, reducing the wear of the cable;

The present invention also provides a process rod string for dynamic logging conveyed by coiled tubing in horizontal wells,

Horizontal well coiled tubing conveying dynamic logging process rod string, composed of horizontal well coiled tubing conveying dynamic logging process string, horizontal well coiled tubing conveying dynamic logging process rod string, and horizontal well testing dynamic lifting device,

Horizontal well coiled tubing transport dynamic logging process string, mainly composed of tubing, disconnector, anti-jack device, packer, horizontal well testing hollow pump, bell mouth, the connection structure from bottom to top is: bell mouth, tubing, Horizontal well testing Hollow pump, packer, anti-jack device, disconnector and tubing are connected in sequence, and the tubing is connected to the wellhead;

Coiled tubing for horizontal wells transports dynamic logging process rod strings, which are mainly composed of coiled tubing, cable heads, flexible nipples, centralizers for downhole instruments, etc. There are downhole instrument centralizers;

The dynamic lifting device for horizontal well testing is composed of a workover machine, self-sealing well sealing device, oil pipe, disconnector, connecting rod, anti-jack device, packer, hollow pump for horizontal well testing, and bell mouth. The oil pipe passes through the self-sealing well The sealer is connected with the disconnector through ₂ ^7/8 thickened tubing thread; the disconnector is connected with the anti-jack device through ² _{7/8 thickened} tubing thread ^; the anti-jack device is connected with the Packer connection; the packer is connected to the horizontal well test hollow pump through the ₂ ^7/8 thickened tubing thread; the horizontal well test hollow pump is connected to the tubing bell mouth through the ₂ ^7/8 thickened tubing thread; the length of the connecting rod is 9.5m, with an outer diameter of 48.3mm and an inner diameter of 40mm, with M48×2.5 male buckles on both ends, which are respectively connected to the male head of the disconnector and the hollow plunger of the horizontal well test hollow pump;

Coiled tubing wellhead guiding device mainly consists of casing collar 1301, centering fixed pulley support plate 1303, centering fixed pulley 1304, centering fixed pulley shaft 1305, connecting plate 1306, guide pulley 1307, guide pulley shaft 1308, shaft pin 1309, guide Pulley support plate 1310, nut 1311, screw mandrel 1312 and bearing pin 1314 are formed. It is characterized in that: the casing collar 1301 is cylindrical, and the casing collar 1301 can be set on the tubing collar at the wellhead to fix the guiding device during logging work. Two parallel rectangular centered pulley support plates 1303 are welded on the outer wall of the casing collar 1301, and the centered fixed pulley support plate 1303 is parallel to the center line of the casing collar 1301; two centered fixed pulley support plates 1303 The upper end of the upper end is connected with a centered fixed pulley 1304 through the centered fixed pulley shaft 1305, and the centered fixed pulley 1304 is in the middle of two centered fixed pulley support plates 1303; Screw joint 1313, the cross section of screw joint 1313 is circular or square, there is a pin hole at one end of the screw joint 1313, there is a pin hole at the bottom of the two centered fixed pulley support plates 1303, and the pin shaft 1314 passes through The pin shaft hole of the screw joint 1313 and the 1303 pin holes of the fixed pulley support plate in the center; the screw joint 1313 can rotate along the shaft pin 1314; A screw mandrel 1312 is fixed in the central screw hole at one end, and the center line of the screw mandrel joint 1313 is on the same straight line as the center line of the screw mandrel 1312; there is a nut 1311 on the screw mandrel 1312; There is a sliding sleeve, and two rotating pins are symmetrically welded on the outer wall of the sliding sleeve. There are rotating pin holes at the lower ends of the two guide pulley support plates 1310. inside the pin hole;

The two guide pulley support plates 1310 are rectangular flat plates; the upper ends of the two guide pulley support plates 1310 have pin holes respectively, and a guide pulley shaft 1308 is arranged in the pin holes at the upper ends of the two guide pulley support plates 1310. A guide pulley 1307 is connected to the guide pulley shaft 1308, and the guide pulley 1307 is in the middle of the two guide pulley support plates 1310;

There are shaft pin holes in the middle of the two guide pulley support plates 1310, there is a shaft pin 1309 in the pivot pin holes in the middle of the two guide pulley support plates 1310, and the shaft pin 1309 passes through the pivot pins in the middle of the two guide pulley support plates 1310 Hole and connecting plate 1306 one end shaft pin hole, pivot pin 1309 connects connecting plate 1306 in the middle part of two guide pulley support plates 1310; Center fixed pulley support plate 1303 middle part has pin shaft hole, centers the pin of fixed pulley support plate 1303 A pin shaft is passed through the shaft hole, and the other end of the connecting plate 1306 is connected to both ends of the pin shaft.

Working principle and working process of the present invention: refer to Fig. 1 . When performing well logging operations, the coiled tubing of the horizontal well is first lowered to transport the dynamic logging process string, the seat packer, the anchor anti-jack device, the string is disengaged from the disconnector, the wellhead guide device is installed, and then the The coiled tubing into the horizontal well transports the dynamic logging process rod string, drains the liquid, and uses the coiled tubing to lift and lower for testing.

The beneficial effect of the present invention is that the horizontal well coiled tubing transport dynamic logging method is used to perform horizontal well logging to realize dynamic logging, and the coiled tubing is used for lifting and lowering, and the rigidity and toughness are good.

Description of drawings

A more complete and better understanding of the invention, and many of its attendant advantages, will readily be learned by reference to the following detailed description when considered in conjunction with the accompanying drawings , but the accompanying drawings illustrated herein are intended to provide a further understanding of the invention and constitute A part of the present invention, the exemplary embodiment of the present invention and its description are used to explain the present invention, and do not constitute an improper limitation of the present invention, as shown in the figure :

Fig. 1 is a structural representation of the present invention ;

Fig. 2 is a schematic diagram of a dynamic lifting device for testing a horizontal well of the present invention;

Fig. 3 is a structural schematic diagram of the coiled tubing wellhead guide device of the present invention;

Fig. 4 is a schematic diagram of the working state of the coiled tubing wellhead steering device of the present invention.

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Detailed ways

Obviously, many modifications and changes made by those skilled in the art based on the gist of the present invention belong to the protection scope of the present invention.

Embodiment 1: as shown in Figure 1 , Figure 2 , Figure 3 , and Figure 4 ,

The coiled tubing transported dynamic logging process rod string for horizontal wells is composed of the coiled tubing transported dynamic logging process string for horizontal wells and the coiled tubing transported dynamic logging process rod string for horizontal wells;

Coiled tubing for horizontal wells transports dynamic logging process strings, which are mainly composed of tubing, disconnectors, anti-jack devices, packers, hollow pumps for horizontal well testing, and bell mouths. The bottom-up connection structure is: 2 ⁷ / ₈ in bell mouth, 2 ⁷ / ₈ in tubing, horizontal well test hollow pump, Y211-114 packer, anti-top device, disconnector and 2 ⁷ / ₈ in tubing, 2 ⁷ / ₈ in tubing all the way to the wellhead;

Coiled tubing for horizontal wells transports dynamic logging process rods, mainly composed of coiled tubing, cable heads, flexible nipples, and downhole instrument centralizer connections. The upper part of downhole instruments is connected to flexible nipples, cable heads, and coiled tubing. There are downhole instrument centralizers;

See Figure 1 . When performing well logging operations, the coiled tubing of the horizontal well is first lowered to transport the dynamic logging process string, the seat packer, the anchor anti-jack device, and the string is disconnected from the disconnector:

Setting: lift the string to a height of 1.3m, lower the string slowly, pressurize to 6-8t, and set the packer. Continue to lower the pipe string slowly, increase the pressure to 10t, and anchor the anti-jack device;

Disconnection: Lift the string slowly, control the suspended weight to 15.5-16t, reverse the tubing for 20-24 turns, and disconnect the string from the disconnector;

Install wellhead guides;

Into the horizontal well coiled tubing to transport the dynamic logging process rod string;

Drainage: control the stroke ≤ 4.5m, stroke times 2 ~ 3min-1, the discharged liquid is recovered in the pool, and the test starts after the discharge volume meets the requirements;

The coiled tubing was used for testing.

Example 2:

As shown in Figure 1 , the coiled tubing operation equipment 12; the wellhead is connected to the casing 11, and the casing 11 has a first downhole instrument centralizer 1, a second downhole instrument centralizer 16, a downhole instrument 2, a flexible nipple 3, and a coiled tubing 4. Bell mouth 5, tubing 6, hollow pump for horizontal well testing 7, packer 8, anti-jack device 9 and disconnector 10; horizontal well coiled tubing transport dynamic logging process string, bottom-up string structure The bell mouth 5 is connected to the tubing 6, the other end of the tubing 6 is connected to 7, the other end of the horizontal well test hollow pump 7 is connected to the packer 8, the other end of the packer 8 is connected to the anti-jack device 9, and the other end of the anti-jack device 9 The other end is connected to the disconnector 10, and the other end of the disconnector 10 is connected to the oil pipe 6, and the oil pipe 6 is connected to the wellhead, and the wellhead is connected to the casing 11; One end is connected to the second downhole instrument centralizer 16, and the other end of the second downhole instrument centralizer 16 is connected to the flexible nipple 3; the other end of the flexible nipple 3 is connected to the coiled tubing 4; the other end of the coiled tubing 4 is connected to the coiled tubing on the surface Working equipment 12.

As shown in Figure 2 , the wellhead is connected to the casing 11, and the casing 11 has a bell mouth 5, a tubing 6, a packer 8, an anti-jack device 9, a disconnector 10, a connecting rod 20 and a hollow pump 7 for horizontal well testing;

Bell mouth 5 is connected to tubing 6, and tubing 6 is connected to hollow pump 7 for horizontal well testing. The other end of hollow pump 7 for horizontal well testing is connected to packer 8. The other end is connected to the connecting rod 20, the other end of the connecting rod 20 is connected to the disconnector 10, the other end of the disconnector 10 is connected to the oil pipe 6, and the other end of the oil pipe 6 is connected to the self-sealing well sealing device 14;

The casing pipe 11 is connected with a self-sealing sealer 14 , and the self-sealing sealer 14 is connected with a workover machine 19 .

The dynamic logging and lifting device for horizontal wells is mainly composed of workover machine 19, self-sealing sealing device 14, tubing 6, SCT-62 type disconnector 10, connecting rod 20, SCF-62 type jacking device 9, Y211- Composed of 114 type packer 8, SCB-40 type horizontal well testing hollow pump 7, bell mouth 5; oil pipe 6 passes through self-sealing well sealing device 14, and SCT-62 type disconnector 10 passes through ₂ ^7/8 thickened oil pipe Thread connection; SCT-62 type disconnector 10 is connected with SCF-62 type anti-jack device ₉ through 2 ^7/8 thickened oil pipe thread; SCF-62 type anti-jack device 9 is connected with Y211 through ₂ ^7/8 thickened oil pipe thread The -114 type packer 8 is connected; the Y211-114 type packer 8 is connected to the SCB-40 horizontal well test hollow pump 7 through the 2 ⁷ / ₈ thickened tubing thread; the SCB-40 horizontal well test hollow pump 7 is passed ₂ ^7/8 thickened oil pipe thread is connected with the bell mouth 5 of the oil pipe; the length of the connecting rod 20 is 9.5m, the outer diameter is 48.3mm, and the inner diameter is 40mm. The male head of type disconnector 10 and the hollow plunger of SCB-40 type horizontal well test hollow pump 7 are connected.

Embodiment 3: Refer to Fig. 2 . A coiled tubing delivery dynamic logging process string for horizontal wells, mainly composed of workover machine, self-sealing sealer, tubing, SCT-62 type disconnector, connecting rod, SCF-62 type anti-jacking device, Y211-114 Type packer, SCB-40 type hollow pump for horizontal well testing, bell mouth; tubing passes through the self-sealing well sealer, and is connected with SCT-62 type disconnector through ₂ ^7/8 thickened tubing thread; SCT-62 type The disconnector is connected to the SCF-62 type anti-jack device through the ₂ ^7/8 thickened tubing thread; the SCF-62 type anti-jack device is connected to the Y211-114 type packer through the ² _7/8 thickened tubing thread; the Y211- The 114-type packer is connected to the SCB-40 horizontal well test hollow pump through the ₂ ^7/8 thickened tubing thread; the SCB-40 horizontal well test hollow pump is connected to the tubing bell mouth through the ₂ ^7/8 thickened tubing thread; The length of the connecting rod is 9.5m, the outer diameter is 48.3mm, and the inner diameter is 40mm. There are M48×2.5 male buckles at both ends, which are respectively connected to the male head of the SCT-62 disconnector and the SCB-40 horizontal well test hollow. Hollow plunger connection for the pump.

Embodiment 4: Taking a coiled tubing wellhead steering device as an example, the present invention will be further described in detail.

See Figure 3 . The coiled tubing wellhead guiding device of the present invention is mainly composed of casing collar 1301, centered fixed pulley support plate 1303, centered fixed pulley 1304, centered fixed pulley shaft 1305, connecting plate 1306, guide pulley 1307, guide pulley shaft 1308, and shaft pin 1309 , Guide pulley support plate 1310, nut 1311, screw mandrel 1312 and bearing pin 1314 are formed.

The casing collar 1301 is cylindrical, and two parallel rectangular centered pulley support plates 1303 are welded on the outer wall of the casing collar 1301. The length of the centered fixed pulley support plate 1303 is 400 mm and the width is 70 mm. The central fixed pulley support plate 1303 is parallel to the centerline of the casing collar 1301 . A centered fixed pulley 1304 is connected to the upper ends of the two centered fixed pulley support plates 1303 through the centered fixed pulley shaft 1305, and the centered fixed pulley 1304 is in the middle of the two centered fixed pulley support plates 1303. The centering pulley 1304 has a diameter of 150mm. A screw joint 1313 is connected to the bottom of the two centered fixed pulley support plates 1303 through a pin shaft 1314. The cross section of the screw joint 1313 is a square, and one end of the screw joint 1313 has a horizontal pin hole. The bottom of the centered fixed pulley support plate 1303 has a pin hole, and the pin shaft 1314 passes through the pin hole of the screw mandrel joint 1313 and the two centered fixed pulley support plates 1303 pin holes. There is a central screw hole at the other end of the screw joint 1313, and an M20 screw 1312 is fixed in the center screw hole at the other end of the screw joint 1313. The center line of the screw joint 1313 and the center line of the screw mandrel 1312 are on the same straight line superior. An M20 nut 1311 is arranged on the screw mandrel 1312 . At the bottom of the nut 1311 and on the screw mandrel 1312, a sliding sleeve is sleeved. Two rotating pins are symmetrically welded on the outer wall of the sliding sleeve. Respectively insert in the pin hole of two guide pulley support plates 1310 lower ends.

The two guide pulley support plates 1310 are rectangular flat plates, the length of the guide pulley support plates 1310 is 1000mm, and the width is 100mm. The upper ends of the two guide pulley support plates 1310 have shaft pin holes respectively, and a guide pulley shaft 1308 is arranged in the shaft pin holes at the upper ends of the two guide pulley support plates 1310, and the guide pulley shaft 1308 is connected with a guide pulley 1307. The pulley 1307 is in the middle of the two guide pulley support plates 1310 . There are shaft pin holes in the middle of the two guide pulley support plates 1310, and the distance between the pivot pin holes in the middle of the guide pulley support plates 1310 and the shaft pin holes at the upper end of the guide pulley support plates 1310 is 450mm. In the shaft pin holes in the middle of the two guide pulley support plates 1310, there is a shaft pin 1309, and the shaft pin 1309 passes through the shaft pin holes in the middle of the two guide pulley support plates 1310 and the shaft pin hole at one end of the connecting plate 1306, and the shaft pin 1309 will The connecting plate 1306 is connected in the middle of the two guide pulley support plates 1310 .

There is a pin hole in the center of the fixed pulley support plate 1303 middle part, and the pin shaft is worn in the pin hole of the center fixed pulley support plate 1303, and the other end of the connecting plate 1306 is connected to the two ends of the pin shaft. The connecting plate 1306 has a length of 350mm.

Example 5:

A technical rod string for dynamic logging conveyed by coiled tubing in horizontal wells,

Horizontal well coiled tubing conveying dynamic logging process rod string, composed of horizontal well coiled tubing conveying dynamic logging process string, horizontal well coiled tubing conveying dynamic logging process rod string, and horizontal well testing dynamic lifting device,

Horizontal well coiled tubing transport dynamic logging process string, mainly composed of tubing, disconnector, anti-jack device, packer, horizontal well testing hollow pump, bell mouth, the connection structure from bottom to top is: bell mouth, tubing, Horizontal well testing Hollow pump, packer, anti-jack device, disconnector and tubing are connected in sequence, and the tubing is connected to the wellhead;

Coiled tubing for horizontal wells transports dynamic logging process rod strings, which are mainly composed of coiled tubing, cable heads, flexible nipples, centralizers for downhole instruments, etc. There are downhole instrument centralizers;

Working principle and working process of the present invention: refer to Fig. 1 . When performing well logging operations, the coiled tubing of the horizontal well is first lowered to transport the dynamic logging process string, the seat packer, the anchor anti-jack device, the string is disengaged from the disconnector, the wellhead guide device is installed, and then the The coiled tubing into the horizontal well transports the dynamic logging process rod string, drains the liquid, and uses the coiled tubing to lift and lower for testing.

Coiled tubing wellhead guiding device mainly consists of casing collar 1301, centering fixed pulley support plate 1303, centering fixed pulley 1304, centering fixed pulley shaft 1305, connecting plate 1306, guide pulley 1307, guide pulley shaft 1308, shaft pin 1309, guide Pulley support plate 1310, nut 1311, screw mandrel 1312 and bearing pin 1314 are formed. It is characterized in that: the casing collar 1301 is cylindrical, and the casing collar 1301 can be set on the tubing collar at the wellhead to fix the guiding device during logging work. Two parallel rectangular centered pulley support plates 1303 are welded on the outer wall of the casing collar 1301, and the centered fixed pulley support plate 1303 is parallel to the center line of the casing collar 1301; two centered fixed pulley support plates 1303 The upper end of the upper end is connected with a centered fixed pulley 1304 through the centered fixed pulley shaft 1305, and the centered fixed pulley 1304 is in the middle of two centered fixed pulley support plates 1303; Screw joint 1313, the cross section of screw joint 1313 is circular or square, there is a pin hole at one end of the screw joint 1313, there is a pin hole at the bottom of the two centered fixed pulley support plates 1303, and the pin shaft 1314 passes through The pin shaft hole of the screw joint 1313 and the 1303 pin holes of the fixed pulley support plate in the center; the screw joint 1313 can rotate along the shaft pin 1314; A screw mandrel 1312 is fixed in the central screw hole at one end, and the center line of the screw mandrel joint 1313 is on the same straight line as the center line of the screw mandrel 1312; there is a nut 1311 on the screw mandrel 1312; There is a sliding sleeve, and two rotating pins are symmetrically welded on the outer wall of the sliding sleeve. There are rotating pin holes at the lower ends of the two guide pulley support plates 1310. inside the pin hole.

The two guide pulley support plates 1310 are rectangular flat plates; the upper ends of the two guide pulley support plates 1310 have pin holes respectively, and a guide pulley shaft 1308 is arranged in the pin holes at the upper ends of the two guide pulley support plates 1310. A guide pulley 1307 is connected to the guide pulley shaft 1308, and the guide pulley 1307 is in the middle of the two guide pulley support plates 1310;

There are shaft pin holes in the middle of the two guide pulley support plates 1310, there is a shaft pin 1309 in the pivot pin holes in the middle of the two guide pulley support plates 1310, and the shaft pin 1309 passes through the pivot pins in the middle of the two guide pulley support plates 1310 Hole and connecting plate 1306 one end shaft pin hole, pivot pin 1309 connects connecting plate 1306 in the middle part of two guide pulley support plates 1310; Center fixed pulley support plate 1303 middle part has pin shaft hole, centers the pin of fixed pulley support plate 1303 A pin shaft is passed through the shaft hole, and the other end of the connecting plate 1306 is connected to both ends of the pin shaft.

The working principle and working process of coiled tubing wellhead steering device: refer to Figure 3 . Before running the coiled tubing 1302, the casing collar 1301 is first set on the tubing collar at the wellhead. Then the coiled tubing 1302 passes through the middle of the two guide pulley support plates 1310 . At this time, the nut 1311 is at the far end of the screw rod 1312 . Firstly, the guide pulley 1307 is removed, the coiled tubing 1302 passes through the hole provided at one end of the guide pulley support plate 1310, and the guide pulley 1307 and the rotating screw 1312 are installed, so that the guide pulley 1307 moves inward, so that the coiled tubing 1302 and the working After there is a certain distance between the traveling blocks of the machine, the coiled tubing 1302 can be lowered. When the coiled tubing 1302 needs to be lowered, the nut 1311 is rotated so that the nut 1311 is rotated to the end of the screw rod 1312 close to the screw rod joint 1313 . Since a quadrilateral is formed between the centered fixed pulley support plate 1303, the connecting plate 1306, the guide pulley support plate 1310, and the screw joint 1313, the guide pulley support plate 1310 is parallel to the centered fixed pulley support plate 1303, and the guide pulley support plate 1310 drives the guide pulley. The pulley 1307 is away from the top of the casing collar 1301 above the wellhead. At this time, the coiled tubing 1302 leaves above the wellhead on the traction line of the guide pulley 1307 . After the coiled tubing 1302 starts working, the coiled tubing 1302 can avoid the traveling block of the operating machine to avoid the friction between the coiled tubing 1302 and the traveling block of the operating machine and prevent the coiled tubing 1302 from wearing. Then, the coiled tubing 1302 is guided into the wellhead through the central fixed pulley 1304, so that the coiled tubing 1302 will not rub against the wellhead casing or tubing, reducing the wear of the cable.

The dynamic lifting device for horizontal well testing is composed of a workover machine, self-sealing well sealing device, oil pipe, disconnector, connecting rod, anti-jack device, packer, hollow pump for horizontal well testing, and bell mouth. The oil pipe passes through the self-sealing well The sealer is connected with the disconnector through ₂ ^7/8 thickened tubing thread; the disconnector is connected with the anti-jack device through ² _{7/8 thickened} tubing thread ^; the anti-jack device is connected with the Packer connection; the packer is connected to the horizontal well test hollow pump through the ₂ ^7/8 thickened tubing thread; the horizontal well test hollow pump is connected to the tubing bell mouth through the ₂ ^7/8 thickened tubing thread; the length of the connecting rod is 9.5m, with an outer diameter of 48.3mm and an inner diameter of 40mm, with M48×2.5 male buckles on both ends, which are respectively connected to the male head of the disconnector and the hollow plunger of the horizontal well test hollow pump.

The working principle and working process of the dynamic lifting device for horizontal well testing: in the lifting of horizontal well testing, the tubing bell mouth, tubing, horizontal well testing hollow pump, packer, anti-jack are lowered in sequence, and the connecting rod and For the plunger connection of the horizontal well test hollow pump, the connecting rod passes through the female head of the tubing disconnector to connect with the male connector of the tubing disconnector, and then connects the male connector of the tubing disconnector to the female connector of the tubing disconnector. The upper part of the male head of the oil pipe disconnector connects the oil pipe to the wellhead; a self-sealing well sealer is installed at the wellhead.

Horizontal well test After the hollow pump is run below the dynamic fluid level of the horizontal well, set the packer, lower the string to pressurize, anchor the anti-jack device, reverse the tubing, and make the male head of the tubing disconnector and the female connector of the tubing disconnector Separation, the oil pipe is lifted and released by the operating machine on the ground, which can drive the male head of the oil pipe disconnector, the connecting rod and the plunger of the horizontal well test hollow pump to reciprocate, and the lifted downhole fluid is discharged from the wellhead through the annular space of the oil casing. Oil pipes, connecting rods, and hollow plungers in the horizontal well testing hollow pumps provide testing passages for testing instruments.

Beneficial effects of the dynamic lifting device for horizontal well testing: the lifting and discharging are stable and reliable, and the testing channel is smooth.

Embodiment 6:

Taking a lifting device for dynamic logging of a horizontal well as an example, the present invention will be further described in detail.

The horizontal well dynamic logging lifting device of the present invention is mainly composed of a workover machine, a self-sealing sealing device, a tubing, an SCT-62 type tubing disconnector, a connecting rod, an SCF-62 type anti-jacking device, and a Y211-114 type sealing device. Composed of spacer, SCB-40 type horizontal well hollow test pump and bell mouth; the oil pipe passes through the self-sealing well sealing device, and is connected with the SCT-62 type oil pipe disconnector through ₂ ^7/8 thickened oil pipe threads; the SCT-62 type oil pipe The disconnector is connected with the SCF-62 type anti-jack device through ₂ ^7/8 thickened oil pipe threads; the center channel of the SCF-62 type anti-jack device is 62mm; the SCF-62 type anti-jack device is thickened through ₂ ^7/8 The tubing thread is connected to the Y211-114 packer; the center pipe of the Y211-114 packer is 62 mm; the Y211-114 packer is connected to the SCB-40 horizontal well hollow through ₂ ^7/8 thickened tubing thread Test pump connection; the pump barrel of SCB-40 horizontal well hollow test pump is a steel pipe with a length of 8 meters and an outer diameter of 110 mm; the outer diameter of the plunger of SCB-40 horizontal well hollow test pump is 90 mm; SCB- The 40-type horizontal well hollow test pump is connected to the bell mouth of the tubing through the ₂ ^7/8 thickened tubing thread; the length of the connecting rod is 9.5 meters, the outer diameter is 48.3 mm, and the inner diameter is 40 mm. The male buckle is respectively connected with the male head of the SCT-62 type tubing disconnector and the hollow plunger of the SCB-40 type horizontal well hollow test pump.

Embodiment 7:

An embodiment of a dynamic logging lifting method for a horizontal well.

1) Going into the well: connecting tubing bell mouth, tubing, SCB-40 type horizontal well hollow test pump, Y211-114 type packer, SCF-62 type anti-top device, SCT-62 type tubing disconnector assembly process in sequence The pipe string is lowered into the well.

3) Install the wellhead: Install the self-sealing wellhead at the wellhead. Since the self-sealing wellsealing device can be selected from various models, and this method is a conventional technique for downhole personnel, it will not be described in detail here.

2) Setting. After the SCB-40 horizontal well hollow test pump is lowered into the dynamic liquid surface at 200m-500m, lift the string to a height of 1.3m, lower the string slowly, pressurize to 6-8 tons, and seal the Y211-114 type seal Spacer; continue to lower the pipe string slowly, increase the pressure to 10 tons, and anchor the SCF-62 type anti-top device.

3) Disconnection: lift up the tubing string slowly, control the suspended weight to be the weight of the tubing above the Y211-114 packer, reverse the tubing 12 to 14 times, and disconnect the tubing string from the SCT-62 tubing disconnector.

4) Lifting: Control the stroke to 3 meters to 5 meters, and the stroke times to 2 to 3min-1. The drained liquid is recovered in a sink.

5) Lifting out: Slowly lower the tubing string to pressurize 0.5 tons, turn the tubing forward 16 times, and lift the tubing string slowly. After confirming that the docking is completed and the Y211-114 packer is unsealed, pull out various downhole tools in sequence.

As mentioned above, although the Example of this invention was demonstrated in detail, it is obvious to those skilled in the art that many modifications can be made as long as the inventive point and effect of this invention are not substantially deviated. Therefore, all such modified examples are also included in the protection scope of the present invention.

Claims (8)

1. a logging technique rod tube post for horizontal well coiled tubing conveying dynamic logging, is characterized in that:

This logging technique rod tube post carries dynamic logging process pipe string, horizontal well coiled tubing conveying dynamic logging technique roofbolt by horizontal well coiled tubing, horizontal well is tested dynamic lifting device and formed,

Horizontal well coiled tubing conveying dynamic logging process pipe string, primarily of oil pipe, disjointed device, anti-apical organ, packer, horizontal well test hollow pump, horn mouth composition, syndeton is from bottom to top: horn mouth, oil pipe, horizontal well test hollow pump, packer, anti-apical organ, disjointed device are connected successively with oil pipe, and oil pipe receives well head always;

Horizontal well coiled tubing conveying dynamic logging technique roofbolt, primarily of compositions such as coiled tubing, cable head, flexible nipple, downhole instrument centralizers, downhole instrument top connects flexible nipple, cable head, coiled tubing, and downhole instrument two ends are connected to downhole instrument centralizer;

Horizontal well tests dynamic lifting device, and be made up of production rig, self-sealing blowout preventer, oil pipe, on-off connector, connecting rod, anti-apical organ, packer, horizontal well test hollow pump, horn mouth, oil pipe, through self-sealing blowout preventer, passes through 2 with on-off connector ⁷/ ₈heavy wall tubing is threaded; On-off connector is by 2 ⁷/ ₈heavy wall tubing screw thread is connected with anti-apical organ; Anti-apical organ is by 2 ⁷/ ₈heavy wall tubing screw thread is connected with packer; Packer is by 2 ⁷/ ₈heavy wall tubing screw thread and horizontal well are tested hollow pump and are connected; Horizontal well test hollow pump is by 2 ⁷/ ₈heavy wall tubing screw thread is connected with oil pipe horn mouth; The length of connecting rod is 9.5m, external diameter 48.3mm, internal diameter 40mm, and its two ends are respectively with the pin thread of M48 × 2.5, and the hollow plunger testing hollow pump respectively with the male of on-off connector and horizontal well is connected.

2. logging technique rod tube post according to claim 1, it is characterized in that, coiled tubing well head guiding device, primarily of casing coupling, fixed pulley gripper shoe placed in the middle, fixed pulley placed in the middle, fixed pulley axis, junction plate, leading block, leading block axle, pivot pin, leading block gripper shoe, nut, screw mandrel and bearing pin composition placed in the middle; Casing coupling is cylindrical shape, the outer wall of casing coupling is welded with two parallel fixed pulley gripper shoes rectangular placed in the middle, the centerline parallel of fixed pulley gripper shoe placed in the middle and casing coupling; Be connected with a fixed pulley placed in the middle in the upper end of two fixed pulley gripper shoes placed in the middle by fixed pulley axis placed in the middle, fixed pulley placed in the middle is in the centre of two fixed pulley gripper shoes placed in the middle; A screw mandrel joint is had by pinned connection in the bottom of two fixed pulley gripper shoes placed in the middle, screw mandrel joint cross section is circular or square, pin shaft hole is had in one end of screw mandrel joint, have pin hole in the bottom of two fixed pulley gripper shoes placed in the middle, bearing pin passes pin shaft hole and two fixed pulley gripper shoe pin holes placed in the middle of screw mandrel joint; Have center screw at the other end of screw mandrel joint, screw mandrel joint other end center screw internal fixtion has screw mandrel, and the center line of screw mandrel joint and the center line of screw mandrel are on same straight line; Screw mandrel there is nut; Cover has a sliding sleeve in the bottom of nut and on screw mandrel, sliding sleeve outer wall is symmetrically welded with two and ships and resell on another market, and ships and resell on another market hole in the bottom of two leading block gripper shoes, two ship and resell on another market insert two leading block gripper shoe bottoms respectively ship and resell on another market in hole;

Two leading block gripper shoes are rectangular flat board; There is pin hole the upper end of two leading block gripper shoes respectively, and in the pin hole of two leading block gripper shoe upper ends, have a leading block axle, leading block axle is connected with leading block, leading block is in the middle of two leading block gripper shoes;

Pin hole is had at the middle part of two leading block gripper shoes, pivot pin is had in pin hole in the middle part of two leading block gripper shoes, pivot pin is through the pin hole of the pin hole in the middle part of two leading block gripper shoes and junction plate one end, and junction plate is connected to the middle part of two leading block gripper shoes by pivot pin; Have pin shaft hole in the middle part of fixed pulley gripper shoe placed in the middle, be installed with bearing pin in the pin shaft hole of fixed pulley gripper shoe placed in the middle, the other end of junction plate is connected to the two ends of bearing pin.

3. logging technique rod tube post according to claim 1 and 2 carries out horizontal well coiled tubing conveying dynamic logging method, it is characterized in that containing following steps;

First, former well casing post is tripped out, drifting, well-flushing;

Secondly, to enter in sleeve pipe under horizontal well coiled tubing conveying dynamic logging process pipe string: be: the test of horn mouth, oil pipe, horizontal well hollow pump, packer, anti-apical organ, disjointed device, oil pipe from bottom to top, oil pipe receives well head always, base sealed packer, the anti-apical organ of grappling, tubing string is thrown off from on-off connector;

3rd, well head guiding device is installed;

4th, under enter horizontal well coiled tubing conveying dynamic logging technique roofbolt: downhole instrument top connects flexible nipple, cable head, coiled tubing, and downhole instrument two ends are connected to downhole instrument centralizer;

5th, discharge opeing;

6th, adopt coiled tubing to remove and test;

Finally, coiled tubing, logger is tripped out.

4. horizontal well coiled tubing conveying dynamic logging method according to claim 3, it is characterized in that, well head guiding device uses and comprises the following steps:

The leading block of coiled tubing well head guiding device is unloaded, the hole slot that coiled tubing has through leading block gripper shoe one end, install leading block and rotary screw rod, leading block is moved inward, after making to there is certain distance between coiled tubing and working rig travelling block, coiled tubing can be transferred; When the lower coiled tubing of needs, rotating nut, makes nut rotate to screw mandrel one end near screw mandrel joint; Due to fixed pulley gripper shoe placed in the middle, junction plate, between leading block gripper shoe and screw mandrel joint, form a quadrangle, make leading block gripper shoe parallel with fixed pulley gripper shoe placed in the middle, leading block gripper shoe drives leading block away from the top of casing coupling above well head; Now coiled tubing leaves above well head at the draught line of leading block; After under operation, coiled tubing starts, coiled tubing can avoid the friction that working rig travelling block avoids coiled tubing and working rig travelling block, prevents coiled tubing from wearing and tearing; Then, coiled tubing enters in well head through the guiding of fixed pulley placed in the middle, make coiled tubing can not with wellhead casing pipe or oil pipe friction, decrease the wearing and tearing of cable.

5. the logging technique rod tube post of a horizontal well coiled tubing conveying dynamic logging, it is characterized in that, described horizontal well coiled tubing conveying dynamic logging technique rod tube post comprises horizontal well coiled tubing conveying dynamic logging process pipe string, horizontal well coiled tubing carries dynamic logging technique roofbolt, horizontal well tests dynamic lifting device; Described horizontal well coiled tubing conveying dynamic logging process duct comprises the horn mouth, oil pipe, horizontal well test hollow pump, packer, anti-apical organ, the disjointed device that connect successively from bottom to top and becomes with oil pipe, and described oil pipe extends to well head always; Described horizontal well coiled tubing conveying dynamic logging technique roofbolt comprises the coiled tubing, cable head, flexible nipple, the first downhole instrument centralizer, downhole instrument and the second downhole instrument centralizer that connect setting successively; Described horizontal well is tested dynamic lifting device and is comprised production rig, be arranged at the self-sealing blowout preventer at the top of described oil pipe, and the horizontal well test hollow pump, packer, anti-apical organ, connecting rod and the on-off connector that are set in turn in from lower to upper on described oil pipe, oil pipe is through self-sealing blowout preventer.

6. logging technique rod tube post according to claim 5, it is characterized in that, between described on-off connector and described oil pipe, between described on-off connector and described anti-apical organ, between described anti-apical organ and described packer, described packer and described horizontal well is tested between hollow pump, described horizontal well is tested between hollow pump and described horn mouth and is all threaded connection; The length of described connecting rod is 9.5m, external diameter 48.3mm, internal diameter 40mm, and the two ends of described connecting rod are connected with the hollow plunger that the male of described on-off connector and described horizontal well test hollow pump by the pin thread of M48 × 2.5.

7. logging technique rod tube post according to claim 5, it is characterized in that, the well head of described coiled tubing is provided with guiding device, and described guiding device comprises casing coupling, fixed pulley gripper shoe placed in the middle, fixed pulley placed in the middle, fixed pulley axis, junction plate, leading block, leading block axle, pivot pin, leading block gripper shoe, nut, screw mandrel and bearing pin placed in the middle; The outer wall of described casing coupling is welded with two parallel fixed pulley gripper shoes rectangular described placed in the middle, the centerline parallel of described fixed pulley gripper shoe placed in the middle and described casing coupling; Be connected with a described fixed pulley placed in the middle in the upper end of two described fixed pulley gripper shoes placed in the middle by described fixed pulley axis placed in the middle, described fixed pulley placed in the middle is in the centre of two described fixed pulley gripper shoes placed in the middle; Have a screw mandrel joint in the bottom of two described fixed pulley gripper shoes placed in the middle by described pinned connection, have pin hole in one end of described screw mandrel joint and in the bottom of two described fixed pulley gripper shoes placed in the middle, described bearing pin is through described pin-and-hole; Have center screw at the other end of described screw mandrel joint, described screw mandrel joint other end center screw internal fixtion has described screw mandrel, and the center line of the joint of described screw mandrel and the center line of described screw mandrel are on same straight line; Described screw mandrel is provided with described nut; Cover has a sliding sleeve in the bottom of described nut and on described screw mandrel, ships and resell on another market hole in the bottom of two described leading block gripper shoes, and is provided with in hole of shipping and reselling on another market and ships and resell on another market; In the pin hole of two described leading block gripper shoe upper ends, there is a described leading block axle, in the middle of two described leading block gripper shoes, be provided with described leading block; Have pivot pin in pin hole in the middle part of two described leading block gripper shoes, described pivot pin is through the pin hole of the pin hole in the middle part of two described leading block gripper shoes and described junction plate one end; Be installed with bearing pin in the pin shaft hole of described fixed pulley gripper shoe placed in the middle, the other end of described junction plate is connected to the two ends of described bearing pin.

8. logging technique rod tube post according to claim 7, it is characterized in that, described screw mandrel comprises main body and joint, and the cross section of described main body is circular, and the cross section of described joint is square, and two described leading block gripper shoes are rectangular flat board.