Visual horizontal annulus rock debris migration simulation equipment

A technology for simulating equipment and horizontal rings, applied in teaching models, wellbore/well components, measurements, etc., it can solve the problems of not considering the roughness of the actual annulus well wall, inability to simulate more realistically, and complex structure, so as to ensure experimental results. Reliable, easy to observe, accurate experimental results

Pending Publication Date: 2021-01-15
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

[0004] The horizontal well cuttings migration simulation experimental device disclosed in this patent document has a relatively complex structure. The drill pipe is replaced by a PVC pipe, and the roughness of the actual annular well wall is not considered, so it cannot simulate the actual working conditions more realistically.

Method used

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  • Visual horizontal annulus rock debris migration simulation equipment
  • Visual horizontal annulus rock debris migration simulation equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] see figure 1 , a visualized horizontal annular cuttings migration simulation equipment, including a drilling fluid device, and also includes a cuttings feeding device, a simulated wellbore 19 device, a drill pipe 9 rotation eccentric device, a cuttings separator 18 and a computer 16, the drilling The liquid device includes a first frequency converter 1, a drilling fluid pump 2, a liquid storage tank 3 and a liquid flowmeter 4. The first frequency converter 1 is connected to the drilling fluid pump 2, and the drilling fluid pump 2 is connected to the liquid storage tank 3 and the liquid The flowmeter 4 is connected; the cuttings feeding device includes a cuttings tank 5 and a feed control valve 6 installed on the cuttings tank 5; the simulated wellbore 19 device includes a simulated wellbore 19 and a fixed seat 15, and the simulated wellbore 19 is fixed On the fixed seat 15; the drill rod 9 rotation eccentric device comprises an eccentric 7, a drill rod connection sectio...

Embodiment 2

[0030] see figure 1 and figure 2, a visualized horizontal annular cuttings migration simulation equipment, including a drilling fluid device, and also includes a cuttings feeding device, a simulated wellbore 19 device, a drill pipe 9 rotation eccentric device, a cuttings separator 18 and a computer 16, the drilling The liquid device includes a first frequency converter 1, a drilling fluid pump 2, a liquid storage tank 3 and a liquid flowmeter 4. The first frequency converter 1 is connected to the drilling fluid pump 2, and the drilling fluid pump 2 is connected to the liquid storage tank 3 and the liquid The flowmeter 4 is connected; the cuttings feeding device includes a cuttings tank 5 and a feed control valve 6 installed on the cuttings tank 5; the simulated wellbore 19 device includes a simulated wellbore 19 and a fixed seat 15, and the simulated wellbore 19 is fixed On the fixed seat 15; the drill rod 9 rotation eccentric device comprises an eccentric 7, a drill rod con...

Embodiment 3

[0034] see figure 1 and figure 2 , a visualized horizontal annular cuttings migration simulation equipment, including a drilling fluid device, and also includes a cuttings feeding device, a simulated wellbore 19 device, a drill pipe 9 rotation eccentric device, a cuttings separator 18 and a computer 16, the drilling The liquid device includes a first frequency converter 1, a drilling fluid pump 2, a liquid storage tank 3 and a liquid flowmeter 4. The first frequency converter 1 is connected to the drilling fluid pump 2, and the drilling fluid pump 2 is connected to the liquid storage tank 3 and the liquid The flowmeter 4 is connected; the cuttings feeding device includes a cuttings tank 5 and a feed control valve 6 installed on the cuttings tank 5; the simulated wellbore 19 device includes a simulated wellbore 19 and a fixed seat 15, and the simulated wellbore 19 is fixed On the fixed seat 15; the drill rod 9 rotation eccentric device comprises an eccentric 7, a drill rod co...

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Abstract

The invention discloses visual horizontal annulus rock debris migration simulation equipment, and belongs to the field of petroleum drilling simulation experiments. The visual horizontal annulus rockdebris migration simulation equipment comprises a drilling fluid device, and is characterized by further comprising a rock debris feeding device, a simulation wellbore device, a drilling rod rotatingeccentric device, a rock debris separator and a computer, the simulation wellbore device comprises a simulation wellbore and a fixed seat, the drilling rod rotating eccentric device comprises an eccentric device, a drilling rod connecting section, a drilling rod, a torque sensor, a motor and a second frequency converter, a first frequency converter, the second frequency converter, a liquid flow meter and the torque sensor are connected with the computer, and the simulation wellbore comprises an upper half wellbore body and a lower half wellbore body, the upper half wellbore body is a transparent outer wellbore, the lower half wellbore body is a rough simulation well wall, and a metal outer wellbore is arranged outside the simulation well wall. The simulation equipment is simpler in structure and lower in manufacturing cost, the migration situation of rock debris in the large-displacement horizontal annulus section of a horizontal well can be simulated more truly, and the requirements of experiments under various working conditions are met.

Description

technical field [0001] The invention relates to the technical field of simulating oil drilling experiments, in particular to a visualization device for simulating the movement of cuttings in a horizontal annular space. Background technique [0002] With the increasingly harsh oil drilling and production conditions and the continuous development of drilling and production technology, horizontal well drilling has become an important means of modern oil and gas exploration and development in order to achieve efficient development of old oil fields and special oil reservoirs and increase single well productivity. However, due to the characteristics of the horizontal section of the horizontal well, it is naturally difficult for cuttings to migrate. In the large-displacement horizontal annular section, the drill string is close to the lower hole wall due to its own gravity to form an eccentric annulus, and cuttings are easily trapped at the drill pipe joint. And the lower part of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B21/00E21B47/00G09B25/02
CPCE21B21/00E21B47/00G09B25/02
Inventor 张继川李皋白璟邓虎肖东万夫磊陈一健明显森李雷黄崇君吴磊李睿毛斌
Owner BC P INC CHINA NAT PETROLEUM CORP
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