CN112681992B - Offshore operation system - Google Patents
Offshore operation system Download PDFInfo
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- CN112681992B CN112681992B CN202110012441.3A CN202110012441A CN112681992B CN 112681992 B CN112681992 B CN 112681992B CN 202110012441 A CN202110012441 A CN 202110012441A CN 112681992 B CN112681992 B CN 112681992B
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Abstract
The application discloses shipborne coiled tubing equipment and an offshore operation system, wherein the shipborne coiled tubing equipment comprises a ship, a coil roller, a traction mechanism and a first power mechanism, wherein the coil roller, the traction mechanism and the first power mechanism are arranged on the ship; the coil roller is arranged to coil the coiled tubing under the drive of the first power mechanism; the traction mechanism is arranged to pull the coiled tubing towards or out of the coil drum under the drive of the first power mechanism. The offshore operation system comprises a platform, wellhead equipment and the shipborne coiled tubing equipment, wherein the coiled tubing is kept in a loose state, and a guide frame is arranged at the edge of the platform. The application relates to the field of petroleum exploration and development, and provides shipborne coiled tubing equipment and an offshore operation system, wherein the shipborne coiled tubing equipment and the offshore operation system can expand the application place of the coiled tubing on an offshore platform, can ensure the operation safety of the coiled tubing, can meet the operation environment under 7-level stormy waves, can realize no leakage in an emergency state, and can ensure the safety of personnel and equipment and meet the environmental protection requirement.
Description
Technical Field
The application relates to the field of petroleum exploration and development, in particular to shipborne coiled tubing supporting equipment and an offshore operation system.
Background
The offshore oilfield platform at home is often limited by crane capacity and deck area, so that related service of the continuous oil pipe cannot be carried out, especially in a few small old platforms in Bohai sea, if continuous oil pipe measures are taken, the size and the length of the continuous oil pipe can be reduced as much as possible, a mode of cutting before welding is adopted, the small-diameter pipe limits the technological measures which can be adopted by the continuous oil pipe, only simple technological measures can be carried out, and the welded continuous oil pipe cannot carry out high-strength operation due to weak strength, poor corrosion resistance and unstable welding technology, and also has a plurality of operation problems. Therefore, the advantages of the coiled tubing in offshore oilfield service cannot be truly exerted at present, the service development is greatly limited, and the comprehensive service development is not in front.
Disclosure of Invention
The embodiment of the application provides an offshore operation system, which comprises a platform, wellhead equipment arranged on the platform, and shipborne coiled tubing equipment, wherein the shipborne coiled tubing equipment comprises a ship, a coil roller, a traction mechanism and a first power mechanism, wherein the coil roller, the traction mechanism and the first power mechanism are arranged on the ship; the wellhead apparatus comprising an injector and a second drive mechanism configured to drive the injector out of the downhole coiled tubing;
the coil roller is arranged to coil the coiled tubing under the drive of the first power mechanism;
the traction mechanism is arranged at one side of the input end of the coil roller and is used for pulling the coiled tubing to or out of the coil roller under the drive of the first power mechanism; the coil roller is rotatably arranged on the ship through a roller rotating seat and is used for adjusting the direction of the input end of the coil roller; the ship is provided with a lifting table, and the traction mechanism is arranged on the lifting table; the traction mechanism is provided with a blowout preventer on one side facing away from the coil roller, and is used for cutting the coiled tubing and sealing the pressure inside the coiled tubing in case of emergency;
the ship is separated from the platform, the coiled tubing extends from the wellhead equipment to the traction mechanism and keeps a loose state, and the traction mechanism and the injector run synchronously in the direction so that the coiled tubing between the ship and the platform is in the loose state;
and a guide frame is arranged at the edge of the platform and used for guiding the continuous oil pipe to extend to the shipborne continuous oil pipe equipment.
One possible design, the leading truck includes articulated guiding portion and supporting part, the supporting part is fixed on the platform, the guiding portion is equipped with and is used for guiding coiled tubing's track, be equipped with telescopic lifting support between guiding portion and the supporting part, be used for folding or expansion the leading truck.
One possible design further comprises a control module, wherein the control module is respectively electrically connected or wirelessly connected with the first power mechanism and the second power mechanism and is used for respectively controlling the first power mechanism and the second power mechanism to act.
One possible design is that a crane is provided on the ship to lift the lifting platform to adjust the position of the traction mechanism, the drum rotating seat is rotated and adjusted to be oriented, and the crane lifts the lifting platform and is placed at the front end of the coil drum, so that the traction mechanism is arranged in the same plane with the guide frame and the coil drum.
One possible design is to provide a retrieval mechanism on the platform that is configured to pull the coiled tubing on the coil drum back to the platform under extreme sea conditions.
One possible design, the cylinder roating seat includes swivelling joint's fixing base and rotation seat, the fixing base is fixed on the boats and ships, the coil pipe cylinder is installed on the rotation seat, a power unit sets up to drive the rotation of rotation seat.
The shipborne coiled tubing equipment provided by the embodiment of the application can reduce the requirement on the capability of the platform crane, so that the application place of the coiled tubing on an offshore platform is greatly expanded, meanwhile, the operation safety of the coiled tubing can be ensured, the operation environment under 7-level stormy waves is met, the well sealing is realized without leakage in an emergency state, and the safety of personnel and equipment is ensured, and the environmental protection requirement is met.
The guide frame provided by the embodiment of the application can prevent other equipment or facilities on the platform from obstructing, scratching or colliding with the continuous oil pipe, so that the service life of the continuous oil pipe is reduced, and a safe channel is provided for the transmission of the continuous oil pipe on the platform.
The blowout preventer provided by the embodiment of the application can effectively cut the coiled tubing under emergency conditions and block the fluid in the coiled tubing so as to prevent secondary disasters.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate and do not limit the application.
FIG. 1 is a schematic diagram of an offshore operation system in accordance with an embodiment of the present application;
FIG. 2 is a schematic illustration of the on-board coiled tubing unit of FIG. 1;
FIG. 3 is a schematic view of the platform of FIG. 1;
FIG. 4 is a schematic view of the coil drum of FIG. 2;
FIG. 5 is a schematic view of the traction mechanism of FIG. 2;
FIG. 6 is a schematic view of the guide frame of FIG. 3;
FIG. 7 is a schematic diagram of the offshore operation system control of FIG. 1.
Reference numerals: 100-platform, 101-second power mechanism, 102-control module, 200-ship, 201-thrust piston, 202-second power mechanism, 300-coiled tubing, 400-coiled tubing drum, 401-drum, 402-drum stand, 500-traction mechanism, 501-blowout preventer, 600-wellhead equipment, 700-guide stand, 701-guide part, 702-support part, 703-lifting support, 704-track, 705-roller, 800-lifting platform, 900-drum swivel, 901-swivel, 902-fixed seat.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, embodiments of the present application will be described in detail hereinafter with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be arbitrarily combined with each other.
Referring to fig. 1 to 6, the offshore operation system according to the embodiment of the present application is mainly divided into a platform and a vessel, and the two parts cooperate to complete the coiled tubing operation without being affected by the hoisting capability on the platform, wherein the offshore operation system specifically comprises a platform 100, a wellhead device 600 arranged on the platform 100, and a shipboard coiled tubing device, the vessel 200 is floating on the sea surface and separated from the platform, the coiled tubing 300 extends from the wellhead device 600 to a traction mechanism 500 of the shipboard coiled tubing device and is kept in a loose state, a guide frame 700 is arranged at the edge of the platform 100, and the guide frame 700 can guide the coiled tubing 300 to extend to the shipboard coiled tubing device. Therefore, the offshore operation system guides the coiled tubing to the ship 200, equipment of the coiled tubing is not required to be hung on the platform, and the requirement on the crane capacity of the platform 100 is reduced, so that the application place of the coiled tubing on the offshore platform is greatly expanded.
As shown in fig. 1, 3 and 6, a wellhead device 600 is provided on the platform 100 corresponding to the wellhead, the wellhead device 600 including a tower, an injector, a second power mechanism 101, etc., the second power mechanism 101 providing power to pull the coiled tubing 300 downhole. The turret of wellhead 600 is provided with guides to guide the coiled tubing 300 to the guide frame 700. The guide frame 700 is mounted on the edge of the platform 100 to support the coiled tubing 300, thereby preventing other equipment or facilities on the platform 100 from obstructing, scratching or bumping the coiled tubing 300 and reducing the service life of the coiled tubing 300. The guide frame 700 provides a safe path for the transportation of the coiled tubing 300 on the platform 100. The guide frame 700 comprises a hinged guide part 701 and a support part 702, wherein the bottom of the support part 702 is fixed on the platform 100, and the top of the support part is hinged with one end of the arc-shaped guide part 701; a telescopic lifting bracket 703 is arranged between the guide part 701 and the support part 702, and two ends of the lifting bracket 703 are respectively hinged with the support part 702 and the guide part 701; the lifting support 703 is a hydraulic telescopic rod, and the lifting support 703 can be driven by the second power mechanism 101 to stretch, so as to fold and retract or unfold the guide frame 700; the guide part 701 is provided with a track 704 for guiding the coiled tubing 300, the track 704 is arranged along the length direction of the guide part 701, and a plurality of rollers 705 are arranged in the track 704, and the rollers 705 are arranged along the track 704, so that friction loss of the coiled tubing 300 in the track 704 can be reduced.
As shown in fig. 1, 2, 4, 5 and 7, the shipboard coiled tubing apparatus includes a ship 200, and a coil cylinder 400, a traction mechanism 500 and a first power mechanism 202 mounted on the ship 200, wherein the coil cylinder 400 is configured to coil the coiled tubing 300 under the drive of the first power mechanism 202, retract the coiled tubing 300, the traction mechanism 500 is disposed at an input end side of the coil cylinder 400, and the traction mechanism 500 is configured to pull the coiled tubing 300 toward or out of the coil cylinder 400 under the drive of the first power mechanism 202. The coil roller 400 includes a roller frame 402 and a roller 401, the roller 401 is rotatably mounted in the roller frame 402 and can be driven by the first power mechanism 202 to rotate to wind the coiled tubing 300 thereon, and the input end of the coil roller 400 is the end of the coiled tubing 300 on the coil roller 400 extending into the roller frame 402. Meanwhile, the coil roller 400 is rotatably installed on the ship through the roller rotating seat 900, so that the direction of the input end of the coil roller 400 can be adjusted to adapt to coiled tubing operations at different angles, and the problem of angle deviation caused by sea surface drift of the operation ship is solved. The drum rotating seat 900 comprises a fixed seat 902 and a rotating seat 901 which are rotatably connected, the fixed seat 902 is fixed on a deck of a ship, the drum frame 402 of the coil drum 400 is arranged on the rotating seat 901, the first power mechanism 202 can drive the rotating seat 901 to rotate 90 degrees left and right, the bearing steering bearing capacity of the rotating seat 901 is larger than 40 tons, and the rotating requirement under the condition of load is met. The traction mechanism 500 is driven by a chain, and can clamp the coiled tubing 300 to realize forward and reverse traction, and the traction mechanism is synchronous with the direction operation of the injector, so that the coiled tubing 300 between a ship and a platform is in a loose state instead of a tensioning state, and proper tension and operation speed are maintained, and the coiled tubing 300 is prevented from being damaged. Meanwhile, the traction mechanism 500 is provided with a blowout preventer 501 at a side facing away from the coiled tubing roll 400, so that the coiled tubing 300 needs to sequentially penetrate the blowout preventer 501 and the traction mechanism 500 to extend to the coiled tubing roll 400, and the blowout preventer 501 cuts the coiled tubing 300 and seals the pressure inside the coiled tubing 300, i.e. seals the fluid existing in the coiled tubing 300, so as to prevent secondary disasters. In addition, the vessel 200 is provided with a lifting platform 800, the blowout preventer 501 and the traction mechanism 500 are provided on the lifting platform 800, the lifting platform 800 can be lifted and lowered to adjust the position, and the lifting platform 800 and the coiled tubing 300 at the roller 401 are positioned in the same horizontal plane in the process of conveying the coiled tubing, and the same cloth is maintained with the actual left and right arrangement condition of the coiled tubing 300 on the roller 401.
In some exemplary embodiments, as shown in fig. 7, the offshore operation system further comprises a control module 102, the wellhead device 600 is provided with a second power mechanism 101 for driving the injector to pull out the downhole coiled tubing, the control module 102 is respectively connected with the first power mechanism 202 and the second power mechanism 101 in a wireless manner, and the first power mechanism 202 and the second power mechanism 101 can be respectively controlled to act to realize remote control.
In some exemplary embodiments, as shown in fig. 2, the vessel 200 is equipped with a crane 201, and the crane 201 lifts the lift table 800 to adjust the position of the traction mechanism 500. Thus, after the drum swivel 900 is rotated and adjusted in the direction, the crane 201 can hoist the lifting platform 800 and place it on the front end of the coil drum 400, so that the traction mechanism 400, the guide frame 700 and the coil drum 400 are in the same plane, and the installation is completed.
Additionally, in some exemplary embodiments, a recovery mechanism (not shown) is further provided on the platform 100, and the recovery mechanism may be driven by the second power mechanism 101 to pull the coiled tubing 300 on the ship 200 to recover to the platform. Thus, in conventional sea conditions, on-board coiled tubing equipment can be used, and large equipment (such as coil drums 400) can be placed on the deck of vessel 200 for operation without being re-suspended to platform 100 and without relying on crane capability. In extreme sea conditions, the heaviest coiled tubing 300 may be inverted onto the platform 100 by inverting the coiled tubing 300, i.e., pulling the coiled tubing 300 wrapped around the drum 401 toward the platform using a retrieval mechanism and a traction mechanism.
At present, for a platform with the platform crane capacity smaller than 10T, only the operation of the coiled tubing with the diameter of 1.25 inch/3600 meter or the diameter of 1.5 inch/2600 meter can be realized, so that the operation type of the coiled tubing is limited, the operation well depth is limited, and the working requirement cannot be met. If coiled pipe sectional hoisting and pipe butt welding mode is adopted to carry out coiled pipe operation, only non-stressed coiled pipe operation can be carried out, otherwise, the problem of fracture of the coiled pipe can be caused. The ship-mounted coiled tubing equipment can reduce the requirement on the capability of a platform crane, and the platform 100 with small crane capability can also use the coiled tubing 300 with large pipe diameter, so that the application place of the coiled tubing on an offshore platform is greatly expanded, meanwhile, the operation safety of the coiled tubing can be ensured, the operation environment under 7-level stormy waves is met, the well sealing is not leaked in an emergency state, and the safety of personnel and equipment and the environmental protection requirement are ensured.
By combining the above embodiments, the shipborne coiled tubing equipment provided by the embodiment of the application can reduce the requirement on the capability of the platform crane, so that the application place of the coiled tubing on an offshore platform is greatly expanded, meanwhile, the operation safety of the coiled tubing can be ensured, the operation environment under 7-level stormy waves is met, the well sealing is realized in an emergency state without leakage, and the safety of personnel and equipment is ensured, and the environmental protection requirement is met. The guide frame provided by the embodiment of the application can prevent other equipment or facilities on the platform from obstructing, scratching or colliding with the continuous oil pipe, so that the service life of the continuous oil pipe is reduced, and a safe channel is provided for the transmission of the continuous oil pipe on the platform. The blowout preventer provided by the embodiment of the application can effectively cut the coiled tubing under emergency conditions and block the fluid in the coiled tubing so as to prevent secondary disasters.
In the description of the present application, it should be noted that, directions or positional relationships indicated by terms "upper", "lower", "one side", "the other side", "one end", "the other end", "the side", "the opposite", "four corners", "the periphery", "the" mouth "character structure", etc., are directions or positional relationships based on the drawings, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the structures referred to have a specific direction, are configured and operated in a specific direction, and thus are not to be construed as limiting the present application.
In the description of embodiments of the present application, unless explicitly stated and limited otherwise, the terms "connected," "directly connected," "indirectly connected," "fixedly connected," "mounted," "assembled" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; the terms "mounted," "connected," and "fixedly connected" may be directly connected or indirectly connected through intervening media, and may also be in communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
Although the embodiments of the present application are described above, the embodiments are only used for facilitating understanding of the present application, and are not intended to limit the present application. Any person skilled in the art can make any modification and variation in form and detail without departing from the spirit and scope of the present disclosure, but the scope of the present disclosure is defined by the appended claims.
Claims (6)
1. An offshore operation system comprises a platform and wellhead equipment arranged on the platform, and is characterized by comprising shipborne coiled tubing equipment, wherein the shipborne coiled tubing equipment comprises a ship, a coil roller, a traction mechanism and a first power mechanism, wherein the coil roller, the traction mechanism and the first power mechanism are arranged on the ship; the wellhead apparatus includes an injector and a second power mechanism configured to drive the injector out of the downhole coiled tubing;
the coil roller is arranged to coil the coiled tubing under the drive of the first power mechanism;
the traction mechanism is arranged at one side of the input end of the coil roller and is used for pulling the coiled tubing to or out of the coil roller under the drive of the first power mechanism; the coil roller is rotatably arranged on the ship through a roller rotating seat and is used for adjusting the direction of the input end of the coil roller; the ship is provided with a lifting table, and the traction mechanism is arranged on the lifting table; the traction mechanism is provided with a blowout preventer on one side facing away from the coil roller, and is used for cutting the coiled tubing and sealing the pressure inside the coiled tubing in case of emergency;
the ship is separated from the platform, the coiled tubing extends from the wellhead equipment to the traction mechanism and keeps a loose state, and the traction mechanism and the injector run synchronously in the direction so that the coiled tubing between the ship and the platform is in the loose state;
and a guide frame is arranged at the edge of the platform and used for guiding the continuous oil pipe to extend to the shipborne continuous oil pipe equipment.
2. The offshore operation system of claim 1, wherein the guide frame comprises a hinged guide portion and a support portion, the support portion is fixed on the platform, the guide portion is provided with a track for guiding the coiled tubing, and a telescopic lifting bracket is arranged between the guide portion and the support portion for folding or unfolding the guide frame.
3. The offshore operation system of claim 1, further comprising a control module electrically or wirelessly connected to the first and second power mechanisms, respectively, for controlling the operation of the first and second power mechanisms, respectively.
4. Offshore operation system according to claim 1, wherein a crane is provided on the vessel for lifting the lifting platform for adjusting the position of the traction mechanism, and wherein the crane lifts the lifting platform and is placed at the front end of the coil drum after the drum swivel is swiveled towards, such that the traction mechanism is arranged in the same plane as the guide frame and the coil drum.
5. Offshore operation system according to claim 1, wherein a recovery mechanism is provided on the platform, the recovery mechanism being arranged to pull the coiled tubing on the coil drum back to the platform in extreme sea conditions.
6. The offshore operation system of claim 1, wherein the drum swivel comprises a swivel-connected fixed seat and a swivel seat, the fixed seat being fixed to the vessel, the coil drum being mounted on the swivel seat, the first power mechanism being arranged to drive the swivel seat for swivel movement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110012441.3A CN112681992B (en) | 2021-01-06 | 2021-01-06 | Offshore operation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110012441.3A CN112681992B (en) | 2021-01-06 | 2021-01-06 | Offshore operation system |
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| CN112681992A CN112681992A (en) | 2021-04-20 |
| CN112681992B true CN112681992B (en) | 2023-08-15 |
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| CN202110012441.3A Active CN112681992B (en) | 2021-01-06 | 2021-01-06 | Offshore operation system |
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| Publication number | Publication date |
|---|---|
| CN112681992A (en) | 2021-04-20 |
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