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Drilling fluid skimming tank

A drilling fluid and oil tank technology, applied in the field of drilling fluid oil skimming tanks, can solve problems such as inability to effectively separate crude oil, achieve the effects of stabilizing fluid and flow state, eliminating or eddy current, and increasing the probability of collision

Active Publication Date: 2013-12-18
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the existing technology cannot effectively separate the crude oil in the drilling fluid, and to provide a drilling fluid oil skimming tank. The present invention adopts the method of sedimentation and separation to automatically separate the crude oil mixed in the drilling fluid

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A drilling fluid skimming tank, comprising a tank body 4, in which an oil inlet bin, a separation bin and a discharge bin are sequentially arranged along the liquid flow direction; the oil inlet bin communicates with the oil inlet provided on the tank body 4, The oil inlet chamber communicates with the separation chamber, the separation chamber communicates with the discharge chamber, and the discharge chamber communicates with the discharge pipe 11 provided on the tank body 4 .

[0038] A preferred embodiment of the present invention is that the oil inlet bin communicates with the oil inlet 3 provided on the tank body 4, and a filter plate 5 is arranged in the oil inlet bin, and holes 15 are evenly distributed on the filter plate 5, and the filter plate The liquid inflow surface of 5 is provided with filter screen, and the oil inlet chamber communicates with the separation chamber through the filter plate 5 . This is a preferred mode, and the structure of the oil inlet...

Embodiment 2

[0046] The present invention includes an oil inlet bin, a separation bin and a discharge bin, the oil inlet bin, the separation bin and the discharge bin are arranged in a tank body 4, the tank body 4 is a rectangular closed structure, and a base 13 is arranged under the tank body 4, The four corners of the base 13 are provided with lugs.

[0047] The oil inlet bin includes: oil inlet 3, filter plate 5, slag discharge door 2 and inclined block 1; the inclined block 1 is arranged around the bottom of the oil inlet bin; the slag discharge door 2 is arranged on the oil inlet bin; the oil inlet 3 It is set in the middle of the front end of the tank, connected with oil nonel, and the outside is connected with the input pipe. The filter plate 5 is arranged between the front end panel of the tank body 4 and the separator 6, and has holes 15 on the filter plate 5 with a plate thickness of 10 cm. network;

[0048] The separation chamber includes: a separator 6, an oil collection tank...

Embodiment 3

[0053] Filter plate 5 among the present invention: main structure is as figure 2 , the filter plate 5 not only plays a filtering role, but also plays a role of a baffle and a steady flow. The filter plate 5 is 2.3m wide, 2.5m high, 0.1m thick, 100mm in hole diameter, 200mm in hole spacing, evenly distributed, and covered with a layer of filter screen on the inflow surface. There is a certain space (650mm) at the lower end of the plate without drilling, which can act as a baffle to prevent the drilling fluid flow from washing the precipitated residue into the separator and avoid making it clogged. The hole 15 in the middle can well play a role in evenly distributing the water flow.

[0054] The filter plate 5 can effectively rectify the complex three-dimensional flow in front of the filter plate 5 into a relatively uniform two-dimensional plane flow, which can significantly improve the flow characteristics of the equipment. Although the phenomenon of secondary vortex still e...

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Abstract

The invention discloses a drilling fluid skimming tank. The drilling fluid skimming tank comprises a tank body, wherein an oil inlet cabin, a separation cabin and a discharge cabin are sequentially arranged in the tank body in the flowing direction of liquid, the oil inlet cabin is communicated with an oil inlet formed in the tank body, the oil inlet cabin is communicated with the separation cabin, the separation cabin is communicated with the discharge cabin, and the discharge cabin is communicated with a discharge pipe arranged on the tank body. According to the drilling fluid skimming tank, the precipitation separation method is adopted so that crude oil which is mixed into drilling fluid can be automatically separated from the drilling fluid.

Description

technical field [0001] The invention relates to a drilling fluid oil skimming tank, which is used for skimming oil mixed in the drilling fluid during oil and gas drilling, and belongs to the technical field of design and manufacture of drilling equipment. Background technique [0002] In the process of drilling oil or natural gas, in order to make the drilling fluid have a better lubricating effect, oil-based drilling fluid is often used. They are brought to the ground together and mixed into the drilling fluid. If the oil mixed in the drilling fluid is not removed in time, it will be injected into the ground again by the mud pump along with the drilling fluid, and then more underground crude oil will enter the drilling fluid. When it reaches a certain amount, it will destroy the performance of the drilling fluid, which may eventually cause the drilling fluid to fail to complete the rheological and shearing effects required by the drilling process, and cause serious damage t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D36/04E21B21/06
Inventor 胡畔李伟成舒挺刘彬王谦郑凯中魏强唐聪姚建林陈文才
Owner BC P INC CHINA NAT PETROLEUM CORP
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