Module drilling machine optimal and fast casing running technical method

Abstract

The invention discloses a module drilling machine optimal and fast casing running technical method. The module drilling machine optimal and fast casing running technical method includes a brand-new optimal and fast casing running mode different from a conventional casing running mode of a workover rig and drilling platform cranes cooperating with double pneumatic winches. The module drilling machine optimal and fast casing running technical method mainly includes the steps that before drilling and completion operation, long hanging rings are selected as top drive hanging rings; casings are arranged in a casing deck sleeper area, and a casing chart is made according to the sequential serial numbers; an optimal and fast casing running working table is put in place; connection with a continuous grouting pipeline is performed; a crane is adopted to lift the multiple casings onto the optimal and fast casing running working table at a time, male buckle ends are located at a working table baffle, and female buckle ends are located at a drilling platform gate; lifting hooks and lifting cables are released, and the crane pulls a rod to prepare to transfer the other casings onto the optimaland fast casing running working table; a pneumatic winch on a drilling platform adopts a lifting belt to hold the bottoms of the casings and make the casings be lifted up and leave the catwalk surface; and after a traveling block is set, a suspension arm tilts to be matched with the pneumatic winch for elevator buckling. According to the module drilling machine optimal and fast casing running technical method, the structure is simple, the investment cost is low, the operation labor cost and the equipment cost are reduced, and the using efficiency of on-site equipment is greatly improved.

Description

Technical field [0001] The invention relates to the technical field of casing running, and in particular to a technical method for fast casing running of a modular drilling rig. Background technique [0002] With the development of oil and gas field development technology in the western South China Sea, the development of oil and gas resources in the area has entered a new stage of development. With the improvement of equipment and development capabilities, there have been problems of disconnection and decoupling in some operations and construction procedures. If you continue to blindly follow the original There are procedures for construction, or the advantages of the existing technology development are meaningless. Compared with the method of the modular drilling rig provided by the present invention for the faster and faster casing running method, there are many disadvantages in the previous casing running method. The specific manifestations are: common drilling There are thre...

AI Technical Summary

Problems solved by technology

[0008] 1) It is time-consuming and laborious for the crane to buckle and fasten the elevator. A single downhole casing is time-consuming, and the crane and operators occupy more. 10-12 pieces / h of 13-3 / 8"casing pipes, 13-14 pieces / h of 9-5 / 8"casing pipes, 15-17 pieces / h of 7"tail pipes;

[0009] 2) Static grouting method, the downhole casing string has a long static time, and the risk of sticking is extremely high;

[0010] 3) For the side-bottom side grouting method, because the top drive protection joint is at a high height from the casing elevator, and the center alignment between the top drive protection joint and the casing collar is often not ideal, sometimes it is operated when the wind speed is high, resulting in grouting Displacement is limited, the lowering speed of the casing string is limited or the casing string cannot be filled at all, and the risk of downhole casing string sticking is also high;

[0011] 4) The extended-reach downhole casing in the case of shallow vertical depth, long open hole section, large well deviation, poor well conditions or limited lifting capacity is often limited by the hook suspension weight, and the casing is not in place due to the complicated situation. Make the already difficult extended-reach well operation more complicated

[0013] 1) The derrick needs to be designed with relevant supporting facilities such as casing centering platform, camera for centering platform, etc., which will increase the construction, maintenance and use costs of modular drilling rigs;

[0014] 2) A single elevator is hung under the casing elevator to pick up the casing. When the casing is pulled up to the drill floor, the stability of the casing is not good, and there are many risks such as scratches on the steel wire rope connected by a single elevator;

[0015] 3) During the casing running, one person needs to open a single elevator at the casing uprighting station, buckle up the casing and fasten the casing elevator, and finally command the driller to lower each casing and insert the grouting tool pipeline. The operation is cumbersome and the steps There are many, and the risk of misoperation is relatively high. During the whole casing running process, the requirements for the driller's operation are high. The driller needs to pay attention to the drilling door, the casing centralization platform, the drilling floor surface and the drilling instrument, etc., which may easily lead to the fatigue of the driller's operation. As a result, errors in accurate judgment of the downhole situation lead to frequent occurrence of complex situations;

[0016] 4) If the casing straightening personnel of the second-floor station do not straighten the casing properly, the make-up alignment effect will be poor, which will easily lead to damage to the casing buckle, and the make-up efficiency will be greatly affected. The replacement of damaged casing will have a great impact on the timeliness. The timeliness of the whole operation is not ideal, and the timeliness of running casing is slightly improved compared with the first type, with an average of 13-15 pieces / h for 13-3 / 8" casing, 16-17 pieces / h for 9-5 / 8" casing, and 7 "Tail pipe 18-20 pieces / h;

[0019] 2) There are many limitations in this casing running method. The relative position of the casing discharge area and the drill floor is relatively close, the operating range of the pneumatic drawworks of the drill floor is not large, and the drill floor of the drilling ship and the deck of the pipe yard are kept relatively fixed and close. To meet this requirement, there are many well slots distributed such as 5*8 (2.208*2.208) modular drilling rigs, limit row well positions, limit row well positions, the drill floor gate and the pipe yard deck have a large span and a large slope. Casing operation cannot be carried out;

[0021] 4) The operation of the wire rope of the pneumatic winch takes up a lot of space, and the casing is more risky when it is hoisted from the deck of the pipe yard to the drilling floor;

[0022] 5) Due to the existence of the guide crane, it occupies the deck space of the pipe yard, and the other cranes cannot carry out the related hoisting operations for the next step of operation preparation, which causes a waste of crane resources

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