Stratum data processing method based on electrical resistivity of bedrock oil deposit oil water layer
A technology of formation data and resistivity, applied in earth-moving drilling, measurement, wellbore/well components, etc., can solve the problem of reducing the reliability of hydrocarbon-containing volume and so on
Active Publication Date: 2012-01-11
PETROCHINA CO LTD
View PDF2 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The patent uses the repeatedly adjusted irreducible water saturation to achieve the consistency between the estimated resistivity and the measured resistivity, and uses the adjusted irreducible water saturation to estimate the volume of hydrocarbons. This patent increases the formation resistivity due to mud invasion or decrease is attributed to the irreducible water saturation, which directly leads to a significant reduction in the reliability of the hydrocarbon volume estimated by the adjusted irreducible water saturation.
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
example
[0336] The wellhead temperature of Shen 229 well is 15.9°C, and the wellhead mud density is 1.08g / cm 3 , The resistivity of wellhead mud is 0.17Ω·m, which belongs to salt water mud. The test formation temperature is 116.0°C, the resistivity of the mud at the formation temperature is 0.047Ω m, the resistivity of the mud filtrate at the formation temperature is 0.104Ω m, the total porosity of the bedrock is 3.4%, the water saturation is 21.8%, and the comprehensive formation water resistivity is 1.64Ω m, bound water resistivity 3.00Ω m, movable formation water resistivity 1.50Ω m, bedrock 100% pure water layer resistivity 78.44Ω m, mud filtrate distribution coefficient 0.99, shallow lateral formation fluid replacement rate 18.10%, and the fluid replacement rate of the deep lateral formation is 1.28%. From this, the true resistivity when the layer is oil-bearing (not polluted by mud) is calculated as 706.58Ω m, and the apparent resistivity of the deep and shallow formation after ...
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 provides a bedrock-based stratum data processing method, which is used for identifying a bedrock water layer or a bedrock oil layer or a bedrock oil layer which contains movable water according to the stratum data of the electrical resistivity of the bedrock oil deposit oil water layer. The method comprises the steps of: collecting bedrock oil deposit stratum data by geological exploration development equipment; analyzing the collected bedrock oil deposit stratum data by analysis equipment to obtain the basic parameter required for commutating the true resistivity of the bedrockand the apparent resistivity of the bedrock, and judging whether the bedrock stratum is the water layer, the oil layer or the oil layer which contains the movable water by comparing the numerical value relationship between the depth lateral apparent resistivity and the true resistivity of the polluted bedrock stratum. By analyzing the pollution degree of the bedrock stratum around a well hole, the method can prevent the water layer from being jet by mistake when the bedrock oil well hole is perforated, and is good for the economic and high-efficiency development of the bedrock oil deposit.
Description
technical field [0001] The invention relates to a geophysical exploration and development method, specifically a formation data processing method based on the resistivity of bedrock reservoir oil and water layers, belonging to the category of comprehensive evaluation of logging massive information in geological exploration and data collection and testing related to bedrock reservoir formation parameters In the field of analysis, it is especially suitable for identifying bedrock water layer or bedrock oil layer or bedrock containing movable water oil layer based on bedrock oil reservoir oil and water layer resistivity stratigraphic data. Background technique [0002] As we all know, rocks in nature are divided into three categories: sedimentary rocks, igneous rocks (including eruptive rocks and intrusive rocks) and metamorphic rocks; bedrock (bedrock) belongs to the category of metamorphic rocks or intrusive rocks; sandstone (sandstone) belongs to the category of sedimentary r...
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 Patent Type & Authority Patents(China)
IPC IPC(8): E21B49/00E21B47/00
Inventor 康志勇张方礼龚姚进闫家宁刘其成李维民李焕宝
Owner PETROCHINA CO LTD