Method for identifying ultra-deep lithologic hidden oil and gas reservoir
A technology for oil and gas reservoirs and ultra-deep layers, which is applied in the fields of seismology, seismology, and instruments for logging records, which can solve the problems of difficult characterization of reservoir sand bodies and insensitive lithology.
Pending Publication Date: 2022-05-06
PETROCHINA CO LTD
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0007] The purpose of the present invention is to provide a method for identifying hidden ultra-deep lithological oil and gas reservoirs, so as to solve the problems of difficulty in describing sand bodies in ultra-deep lithological hidden oil and gas reservoirs, and the time difference curve has no sensitive response to lithology, etc., and realize regional Tracing and characterization of favorable sandbodies and analysis of accumulation factors in ultra-deep lithological subtle oil and gas reservoirs, and proposing favorable traps or trap zones for rolling evaluation and deployment
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0043] In order to illustrate the present invention more clearly, the present invention will be further described below in conjunction with preferred embodiments. Those skilled in the art should understand that the content specifically described below is illustrative rather than restrictive, and should not limit the protection scope of the present invention.
[0044] The TⅢ formation in a certain area of an oilfield is an ultra-deep lithological subterranean reservoir with a buried depth of 4800-5000m and a thickness of 3-8m. The study of deep lithologically subtle oil and gas reservoirs includes the following steps:
[0045] S100. Obtain seismic, geological and well logging data of the TⅢ formation in the area.
[0046] S200 , comparing and determining the wells where the phase transition occurs in the completed wells.
[0047] First, define the TⅢ top AC acoustic velocity interface ("velocity conversion interface") as the marker layer.
[0048] Present embodiment enumer...
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
Login to View More Abstract
The invention discloses a method for identifying an ultra-deep lithologic hidden oil and gas reservoir. The method comprises the following steps: S100, acquiring earthquake, geology and logging information of a target area; s200, comparing and determining the well with the phase change in the drilled well; s300, based on the result of S200, analyzing the lithology of the drilled well, performing clustering analysis, and predicting the distribution characteristics of different lithology areas under the well control condition; reservoir forming factor analysis is carried out, and the area range where favorable sand bodies are located is determined; s400, in combination with the well control lithology classification in the S300, selecting a characteristic curve sensitive to lithology change in logging information to carry out waveform indication simulation inversion, and predicting and identifying a lithology hidden oil and gas reservoir distribution range; and S500, providing a deployable favorable trap or trap zone for the identified ultra-deep lithologic hidden oil and gas reservoir by combining a prediction result of S400 with single well oil testing and pilot production data and a reservoir forming factor analysis result.
Description
technical field [0001] The invention relates to the technical field of petroleum geological exploration and development, in particular to a method for identifying ultra-deep lithology hidden oil and gas reservoirs. Background technique [0002] The ultra-deep oil and gas reservoirs in the present invention refer to the industry standard "SY / T6169-1995 Reservoir Classification", and refer to oil and gas reservoirs with a buried depth greater than 4000 meters. [0003] Subtle traps refer to traps that are difficult to identify with conventional technical methods and means, mainly caused by sedimentation, paleo-tectonic movement, hydrodynamic changes, and diagenesis, including stratum overlap, stratum unconformity, updip pinch-out, Lenses, paleochannels, buried hills, reefs and fracture traps, etc. Subtle oil and gas reservoirs refer to the accumulation of oil and gas in subtle traps. [0004] Lithologically subtle oil and gas reservoirs are a type of subtle oil and gas reser...
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
Login to View More IPC IPC(8): G01V1/30G01V1/40
CPCG01V1/301G01V1/306G01V1/40G01V2210/612G01V2210/6161G01V2210/6169G01V2210/647
Inventor 迟红霞曹光胜常敬德赵麟天李龙蓝阔薛尚义路达李仪仟陈东亮盖志刚刘敏张文杰徐春阳许卉牛思凯李若懿朱婵余秋均安艳波徐萍徐明旺战常武王维国
Owner PETROCHINA CO LTD