String bearing module and string

Abstract

The invention discloses a string bearing module and a string and belongs to the field of petroleum and natural gas sand control completion. The string comprises a setting device and a packer which areconnected through the string bearing module; the string bearing module comprises an elastic clamp, bearing lugs, pin shafts and elastic components, wherein the elastic clamp comprises an elastic clamp body and a plurality of elastic claws, which are connected with each other, and the elastic clamp body is provided with a plurality of lug grooves for accommodating the elastic lugs; mandrel holes penetrating through the lug grooves are formed in the elastic clamp body in the axial direction of the elastic clamp body; every bearing lug comprises a bearing lug body, a first protrusion and a second protrusion, wherein the first protrusion and the second protrusion are formed on the bearing lug body, a grove is formed between the first protrusion and the second protrusion, the bearing lug bodyis provided with an elastic component hole, which corresponds to the groove and is used for accommodating the corresponding elastic component; the pin shafts sequentially penetrate through the mandrelholes and the grooves; one end of every elastic component abuts against the corresponding pin shaft.

Description

technical field [0001] The invention relates to the field of oil and natural gas sand control well completion, in particular to a bearing component and a pipe string used for a pipe string. Background technique [0002] Unconsolidated sandstone oil and gas reservoirs are widely distributed in the world. Due to shallow burial and loose cementation, this kind of oil and gas reservoirs are very easy to produce sand during production. At present, sand control can be carried out in two ways: gravel packing and simple sand control. [0003] For sand control of gravel packing, after the sand control string is lowered, the ground sand control pump pumps a certain concentration of mortar from the drill pipe into the well, and then enters the screen and casing annulus and perforation tunnel through selective conversion tools until it covers the entire sand control In the section, the sand-carrying liquid flows through the screen and returns to the ground or enters the formation with ...

AI Technical Summary

Problems solved by technology

In the above patent, the slip device is a one-component slip, and the slips tend to be deflected and get stuck on the sleeve during the lifting process after unsealing; while the torque cannot be transmitted during the lowering process

Anti-pre-setting relies on the shear pins in the hydraulically accessible sand control packer, but because the shear value of the pins should not be designed too high, the anti-pre-setting ability is poor

In the process of using the hydraulic drop-off setting tool, the drop-off method between the setting tool and the packer is to pressurize the annulus, and it is necessary to switch the drill pipe pressing to the annular space pressing, and then switch to the drill pipe pressing. Knock down the bottom ball seat, which makes the operation complicated, and the wellhead equipment is easily limited by the pressure bearing capacity when the annulus is pressurized

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