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Device for recovery and utilization of waste drilling fluid

A drilling fluid and process technology, applied in the field of solid-phase formate drilling fluid recovery equipment, can solve the problem of high cost, achieve the effects of reducing pollution, reducing application cost, and high energy utilization rate

Inactive Publication Date: 2015-09-30
东营顺通化工(集团)有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the cost of the formate drilling fluid system is still too high at present, and there is no system and device dedicated to recovering this type of drilling fluid in China

Method used

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  • Device for recovery and utilization of waste drilling fluid

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Embodiment Construction

[0008] As shown in the accompanying drawings, the waste drilling fluid recycling process device includes a clam hopper 1 for grabbing waste drilling mud, the output end of the clam hopper 1 is connected to a screening hopper 2, and the screening hopper 2. A vibrating screen 19 is provided below, and a cleaning device 3 for flushing waste drilling mud is provided above the vibrating screen 19. The outlet end below the vibrating screen 19 is respectively connected with the gel-breaking coagulation tank 5 and the Drilling system connection, the gel-breaking coagulation tank 5 is connected with the lye storage tank 10 and the formic acid storage tank 9 controlled by the lye pump 12 and the formic acid pump 11 respectively, the output end sequence of the gel-breaking coagulation tank 5 A slurry pump 6 and a plate filter press device 7 are connected, and the output ends of the plate filter press device 7 are respectively connected with a hoist 8 and a preheater 16, and the output end...

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Abstract

The invention discloses a device for recycling waste drilling liquid. The device comprises a clam type hopper for grabbing waste drilling slurry, wherein an output end of the clam type hopper is connected with a screening hopper; a vibrating screen is arranged below the screening hopper; a cleaning device for flushing the waste drilling slurry is arranged above the vibrating screen; an outlet end below the vibrating screen is respectively connected with a gel breaking coagulation tank and a drilling system through a spiral conveying pump; an alkaline liquid storage tank and a methanoic acid storage tank which are respectively controlled by an alkaline liquid pump and a methanoic acid pump are connected to the gel breaking coagulation tank; a residue slurry pump and a platy filter pressing device are sequentially connected to an output end of the gel breaking coagulation tank; a lifter and a preheater are respectively connected to an output end of the platy filter pressing device; a heater and an evaporator are sequentially connected to an output end of the preheater; and a concentration liquid pump is arranged at an output end of the evaporator. By the device, the waste drilling liquid is recycled after being subjected to impurity removal, separated and concentrated, so that pollution caused by the drilling liquid is reduced, the technological process is simple, the energy utilization rate is high, and the production cost is reduced.

Description

technical field [0001] The invention relates to a device for recovering solid-phase formate-free drilling fluid, in particular to a device for recovering and utilizing waste drilling fluid. Background technique [0002] At present, the density of formate drilling fluid can be controlled between 1.00 and 2.37g / cm3, which has good shale inhibition ability and strong solid phase control ability. Because the solid phase content in the drilling fluid is reduced, it is beneficial to high Density drilling fluid has stable rheological properties and can easily achieve low viscosity shear. It is especially suitable for drilling in complex well sections, such as slim hole drilling, open hole drilling and extended reach well drilling. However, the cost of the formate drilling fluid system is too high at present, and there is no system and device dedicated to recovering this type of drilling fluid in China. Contents of the invention [0003] Aiming at the defects of the prior art,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B21/06
Inventor 周奇军
Owner 东营顺通化工(集团)有限公司
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