Cementing cement head column assembly method

A technology of cementing cement and assembly method, which is applied in earth-moving drilling, wellbore/well components, sealing/packaging, etc., can solve problems such as the health and safety risks of cargo and ground commanders, achieve good application effects, reduce The effect of wellhead occupancy time and the reduction of the number of hoisting operations

Active Publication Date: 2017-12-22
CHINA NAT OFFSHORE OIL CORP +1
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Problems solved by technology

If during the hoisting operation, the drilling platform undergoes complicated heaving, pitching/

Method used

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  • Cementing cement head column assembly method

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Embodiment Construction

[0009] A method for assembling cement head columns of the present invention comprises the following steps:

[0010] S1: The cement head and short drill pipe are pre-connected offline on the deck to form the combination of cement head A, and the selected short drill pipe must meet the matching length requirements; this step does not take up wellhead time.

[0011] S2: Utilize the pulley block method to install the drill pipe rubber plug offline at the deck; as figure 1 shown. By adopting the pulley block installation method, it is labor-saving and quick, only one person is needed, and the wellhead time is not occupied.

[0012] S3: Hoist the 3 drill pipes and the cement head from the deck to the logging deck, the top drive cooperates with the catwalk machine to move the two drill pipes to the drill floor, connect the two drill pipes at the wellhead, and fasten them to form a combination B, then sit on the jam Tile, wait for the next step to connect with the cement head A comb...

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Abstract

The invention discloses a cementing cement head column assembly method. The cementing cement head column assembly method comprises the following steps: firstly pre-connecting a cement head and a short drill rod off line on a deck to form a cement head composition A; then installing a drill rod capsule off line on the deck through a pulley block method; hoisting three drill rods and the cement head to a well logging deck from the deck, enabling a top drive to be matched with a catwalk machine to move the two drill rods to a drill floor, connecting the two drill rods on a wellhead, tightly fastening to form a composition B, sitting a slip-weld hanger; enabling the top drive to be matched with the catwalk machine to move the cement head composition A to the drill floor from the well logging deck, combining, connecting and tightly fastening with the composition B of the wellhead, forming an integral cementing cement head column; connecting a cementing pipeline with the cement head, binding the cementing pipeline on a proper position of the cement head column, supporting a bearing of the cement head; finally enabling the well bound cement head column to stand on the drill floor, and finishing the cementing preparation work. The hold-up time of the wellhead is shortened by 60 minutes, the number of hoisting operations is reduced by twice, and the cementing cement head column assembly method has an excellent application effect.

Description

technical field [0001] The invention relates to the field of offshore oil drilling and completion, in particular to a method for assembling a cement head column for well cementing. Background technique [0002] Deep waters such as the Gulf of Mexico, West Africa, and the South China Sea contain a large amount of rich oil and gas resources, and deep water drilling operations are the pilot projects for the development of underground oil and gas reservoirs. When the drill bit reaches the drilling depth of a certain drilling, before the next drilling, the casing needs to be lowered for cementing operation, and the assembly process of the cement head column is indispensable. In offshore oil and gas drilling engineering, the cementing head column is usually in the order from top to bottom: short drill pipe + cement head body + two drill pipes. During the cementing process, the upper short drill pipe is connected to the top drive, and the cement head body is responsible for connec...

Claims

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Application Information

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IPC IPC(8): E21B33/13
CPCE21B33/13
Inventor 李中黄熠李炎军刘和兴郑金龙
Owner CHINA NAT OFFSHORE OIL CORP
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