Device and method for preparing slurry liquid by utilizing seawater

Abstract

The invention discloses a device and a method for preparing slurry liquid by utilizing seawater. The device comprises a seawater pretreatment device, a reverse osmosis device, a slurry stirring pool and the like, wherein the seawater pretreatment system is provided with an active carbon filter and a nanofiltration membrane filter, the reverse osmosis device consists of a plurality of RO (Reverse Osmosis) components, an EDI (Electrodeionization) equipment is used for removing residual Na<+> ions and Cl<-> ions, and a disincrustant in a storage tank, ultrapure water and an electromagnetic valve control switch form maintenance of the reverse osmosis device. According to the method disclosed by the invention, natural seawater flows into the seawater pretreatment system by being pressurized by a booster pump, water after treatment passes through the reverse osmosis device by being pressurized by a high-pressure pump, and produced pure water and bentonite are stirred to prepare the slurry liquid. In addition, the pure water passes through the EDI deionization equipment to produce the ultrapure water use as domestic water for offshore exploration operation, so that the materials produced in the method are used according to the needs and work according to respective ability, and therefore, factor restriction that offshore exploration is limited by a platform space, load, fresh water transportation, fresh water preparation cost and the like is broken through, and the exploration cost is effectively lowered. Furthermore, a maintenance system with the unique design ensures that the service life of the RO components is longer.

Description

technical field [0001] The invention relates to an engineering geological drilling technology, in particular to a device for configuring mud liquid by using seawater and a corresponding configuration method. Background technique [0002] When carrying out engineering geological drilling operations at sea, mud protection walls are required for sand, loose rock, weathered rock and other strata. Using the drilling technology, the sand particles, rock debris and other particles broken by the drill bit at the bottom of the hole are carried out of the hole with the mud liquid, and then circulated after sieving and filtering to keep the hole clean and form a thin and tough layer on the inner wall of the hole. Mud cake stabilizes the drilled formation and prevents liquid phase from invading the formation, preventing accidents such as drill sticking and hole collapse. [0003] It is well known that optimum performance can only be achieved when preparing mud with fresh water. Howeve...

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Problems solved by technology

[0005] The present invention aims at the problem that seawater cannot be directly used to configure mud during engineering geological drilling operations in the sea, so that the cost of exploration remains high, and provides a device that can directly use seawater to configure mud

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