Unlock instant, AI-driven research and patent intelligence for your innovation.

A multi-factor analysis well selection method and device for oilfield profile control

A multi-factor profile control technology, applied in earthwork drilling and production, wellbore/well components, measurement, etc., can solve the problem of permeability heterogeneity, oil layer connectivity, difficult to obtain oil layer producing degree data, and multiple rounds of profile control wells Set problems such as poor applicability, to achieve the effect of strong practicability

Active Publication Date: 2019-05-07
PETROCHINA CO LTD
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The well selection method of wellhead pressure drop curve only considers the factor of wellhead pressure drop, which is not suitable for complex well conditions and multiple rounds of profile control well groups; the method of deriving oil well water plugging decision-making index by using pressure recovery curve modeling, the permeability is very Data such as homogeneity, oil layer connectivity, and oil layer producing degree are not easy to obtain, and field application has certain limitations

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A multi-factor analysis well selection method and device for oilfield profile control
  • A multi-factor analysis well selection method and device for oilfield profile control
  • A multi-factor analysis well selection method and device for oilfield profile control

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] This embodiment provides an evaluation method of influencing factors of profile control, such as figure 1 As shown, taking a complex fault-block oilfield as an example, the method includes the following steps:

[0051] Step 101: Obtain all influencing factors affecting profile control, production data and sensitivity analysis data of profile control wells that have been implemented, and obtain the actual value of each of the multiple collectable influencing factors before profile control, and the actual value of each collectable influencing factor. Collect the corresponding oil increment and the corresponding sensitivity value after profile control of influencing factors.

[0052] Specifically, all 45 influencing factors of the oilfield were obtained from the five aspects of reservoir geology, water injection development process, process design, construction process and post-production control in the profile control operation, which are: reservoir geology (remaining rec...

Embodiment 2

[0114] This embodiment provides a multi-factor analysis well selection method for oilfield profile control, such as figure 2 As shown, taking a low-permeability oilfield as an example, the method includes the following steps:

[0115] Step 101': Obtain all influencing factors affecting profile control, production data and sensitivity analysis data of wells that have implemented profile control, and obtain the actual value of each influencing factor that can be collected before profile control, the actual value of each influencing factor that can be collected after profile control The corresponding oil increase and the corresponding sensitivity value.

[0116] Specifically, all 40 influencing factors of the oilfield were obtained from the five aspects of reservoir geology, water injection development process, process design, construction process and post-production control in the profile control operation, which are: reservoir geology (remaining recoverable reserves , effecti...

Embodiment 3

[0166] This embodiment provides a multi-factor analysis well selection device for oilfield profile control, such as image 3 As shown, the device includes:

[0167] The obtaining module 201 is used to obtain all the influencing factors affecting profile control, the production data and sensitivity analysis data of wells that have implemented profile control, and obtain the actual value of each of the multiple collectable influencing factors before profile control, The corresponding oil increase and the corresponding sensitive value after profile control of each influence factor can be collected;

[0168] The selection module 202 is used to select a plurality of influence factors that can be collected according to the production data of wells that have implemented profile control, the corresponding oil increment after profile control of each influence factor that can be collected, and the corresponding sensitivity value. A factor to be studied;

[0169] The value assignment m...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a multi-factor analyzing well choosing method and device for oil field profile control and belongs to the technical field of oil and gas field development. The method comprises the steps that collectable influence factors are chosen from all influence factors, and then to-be-researched influence factors are chosen from the collectable influence factors, so that obtained to-be-researched influence factor data have more pertinence; according to the corresponding oil increasing amount of the to-be-researched influence factors after profile control and well choosing indexes of a well subjected to profile control, a well choosing index model is obtained; according to the weighing score of each to-be-researched influence factor of the to-be-researched profile control well and the highest weighing value corresponding to the weighing score, the well choosing index of the to-be-researched profile control well is obtained; and the well choosing index of the to-be-researched profile control well is substituted into the well choosing index model to determine profile control of the to-be-researched profile control well, well choosing guiding in the practical on-site application process is achieved, and high practicability is achieved.

Description

technical field [0001] The invention belongs to the technical field of oil and gas field development, in particular to a multi-factor analysis well selection method and device for oil field profile control. Background technique [0002] In the process of oilfield water injection development, due to the heterogeneity of the reservoir, it is easy to cause the injected water to rush along the high permeability zone, resulting in smaller water injection swept volume and poor development effect. Profile control of oilfield reservoirs can effectively inhibit the injection water from rushing along the high permeability zone, expand the swept volume of water injection, ease and control the interlayer, intralayer and plane heterogeneity of the reservoir, and achieve the purpose of improving the effect of water injection development. Selecting appropriate water injection wells for profile control can make profile control development more accurate. [0003] At present, the commonly us...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/20E21B47/00
CPCE21B43/20E21B47/00
Inventor 宋阳坤熊英王啊丽许红恩田继东段理马超邓鲁强李之燕林云
Owner PETROCHINA CO LTD