CN112711076A - Method and device for extracting depth of mud invading stratum in petroleum drilling - Google Patents
Method and device for extracting depth of mud invading stratum in petroleum drilling Download PDFInfo
- Publication number
- CN112711076A CN112711076A CN201911022633.1A CN201911022633A CN112711076A CN 112711076 A CN112711076 A CN 112711076A CN 201911022633 A CN201911022633 A CN 201911022633A CN 112711076 A CN112711076 A CN 112711076A
- Authority
- CN
- China
- Prior art keywords
- resistivity
- depth
- mud
- invasion
- stratum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/18—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/18—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging
- G01V3/34—Transmitting data to recording or processing apparatus; Recording data
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/38—Processing data, e.g. for analysis, for interpretation, for correction
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
Abstract
The invention provides a method and a device for extracting the depth of slurry invading a stratum in petroleum drilling, wherein the method comprises the following steps: acquiring array lateral resistivity logging information; acquiring a resistivity ratio cross plot from a pre-established gallery according to the invaded zone resistivity reflected by the array lateral resistivity logging data, wherein the gallery comprises a plurality of invaded zone resistivity and resistivity ratio cross plots established by resistivity curves of different detection depths under each invaded zone resistivity condition; determining the depth of the pre-estimated mud invasion stratum according to the array lateral resistivity logging information and the obtained resistivity ratio intersection map; and selecting a resistivity ratio cross plot which is adaptive to the estimated mud invasion depth of the stratum from the map library according to the estimated mud invasion depth of the stratum and the array lateral resistivity logging information, and extracting the actual mud invasion depth of the stratum from the selected resistivity ratio cross plot. The invention realizes accurate, simple and rapid extraction of the actual depth of the slurry invading the stratum.
Description
Technical Field
The invention relates to the technical field of geophysical logging, in particular to a method and a device for extracting the depth of mud invading a stratum in petroleum drilling.
Background
During oil drilling, mud filtrate is forced into a permeable formation under the pressure differential between the wellbore and the formation, creating a mud invasion, since the pressure of the mud column is typically greater than the formation pressure in the wellbore.
Mud invasion changes the initial state of the reservoir pore fluid around the well, and the part of the stratum invaded by mud is known as the mud invasion zone and generally consists of a washing zone, a transition zone and an annular zone. The mud invasion zone can cause that the physical logging result of the stratum can not reflect the real stratum condition, cause the misjudgment of the oil-gas layer, and reduce the accuracy of the well logging interpretation and evaluation.
Therefore, corrections for mud invasion are needed to reduce its impact on the interpretation evaluation of the log. The mud invasion depth is a key parameter of a mud invasion correction model, and at present, an empirical formula of parameters such as the mud filtrate invasion depth, an overbalance pressure difference, the invasion time, the mud type and the like is mainly established by a physical and physical experiment method; however, the physical experiment for establishing the empirical formula is extremely complex, and needs to consume large manpower and material resources, and needs to have local area, so that the large-scale popularization and application are difficult.
Disclosure of Invention
The embodiment of the invention provides a method and a device for extracting the depth of mud invasion into a stratum in petroleum drilling, which utilize array lateral electric logging information to establish a gallery of an intersection graph of resistivity ratios and realize accurate and rapid extraction of the depth of mud invasion into the stratum, and the method comprises the following steps:
acquiring array lateral resistivity logging information;
acquiring a resistivity ratio cross plot from a pre-established gallery according to the invaded zone resistivity reflected by the array lateral resistivity logging data, wherein the gallery comprises a plurality of invaded zone resistivity and resistivity ratio cross plots established by resistivity curves of different detection depths under each invaded zone resistivity condition;
determining the depth of the pre-estimated mud invasion stratum according to the array lateral resistivity logging information and the obtained resistivity ratio intersection map;
and selecting a resistivity ratio cross plot which is adaptive to the estimated mud invasion depth of the stratum from the map library according to the estimated mud invasion depth of the stratum and the array lateral resistivity logging information, and extracting the actual mud invasion depth of the stratum from the selected resistivity ratio cross plot.
The embodiment of the invention also provides a device for extracting the depth of the slurry invading the stratum in the petroleum drilling, which comprises the following components:
the data acquisition module is used for acquiring array lateral resistivity logging data;
the resistivity ratio cross plot acquisition module is used for acquiring a resistivity ratio cross plot from a pre-established gallery according to the invaded resistivity reflected by the array lateral resistivity logging data, wherein the gallery comprises a plurality of invaded resistivity and resistivity ratio cross plots established by resistivity curves of different detection depths under the condition of each invaded resistivity;
the estimated mud invasion depth determination module is used for determining the estimated mud invasion depth according to the array lateral resistivity logging information and the acquired resistivity ratio intersection map;
and the actual mud invasion depth extraction module is used for selecting a resistivity ratio cross map adaptive to the estimated mud invasion depth from the map library according to the estimated mud invasion depth and the array lateral resistivity logging information, and extracting the actual mud invasion depth from the selected resistivity ratio cross map.
Embodiments of the present invention further provide a computer device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, the method for extracting a depth of a mud invasion formation in an oil well is implemented.
Embodiments of the present invention also provide a computer-readable storage medium storing a computer program for implementing the above-described method for extracting a depth of a mud invasion formation in an oil well.
The method and the device for extracting the depth of the mud invading the stratum in the petroleum drilling provided by the embodiment of the invention utilize array lateral resistivity logging information and provide a basis for rapidly calculating and extracting the depth of the mud invading the stratum according to the library of the resistivity ratio intersection map which is pre-established by simulation, further estimate the depth of the mud invading the stratum to judge the invasion level of the mud, further utilize the resistivity ratio intersection map, realize the accurate, simple and rapid extraction of the actual depth of the mud invading the stratum and meet the requirement of accurately and rapidly quantitatively evaluating the mud invasion depth.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts. In the drawings:
FIG. 1 is a schematic diagram of a method of extracting depth of mud invasion into a formation in an oil well borehole according to an embodiment of the present invention;
FIG. 2 is a flow chart of a method of extracting a depth of mud invasion into a formation in an oil well borehole according to an embodiment of the present invention;
FIG. 3 is an example of a cross-plot of RLA5/RLA1 and RLA3/RLA1 at different invasion depths Di established by numerical simulation under the condition that the invasion band resistivity Rxo is 3 ohm-meters in an example of a method for extracting the depth of mud invasion into a formation in an oil well drilling according to an embodiment of the present invention;
FIG. 4 is an example of a cross-plot of RLA5/RLA3 and RLA4/RLA3 at different invasion depths Di established by numerical simulation under the condition that the invasion band resistivity Rxo is 3 ohm-meters in an example of a method for extracting the depth of mud invasion into a formation in an oil well drilling according to an embodiment of the present invention;
FIG. 5 is an example of a cross-plot of RLA5/RLA2 and RLA4/RLA2 at different invasion depths Di established by numerical simulation under the condition that the invasion band resistivity Rxo is 3 ohm-meters in an example of a method for extracting the depth of mud invasion into a formation in an oil well drilling according to an embodiment of the present invention;
FIG. 6 is an example of a cross-plot of RLA4/RLA1 and RLA3/RLA1 at different invasion depths Di established by numerical simulation under the condition that the invasion band resistivity Rxo is 3 ohm-meters in an example of a method for extracting the depth of mud invasion into a formation in an oil well drilling according to an embodiment of the present invention;
FIG. 7 is an example of a cross-plot of RLA5/RLA2 and RLA3/RLA2 at different invasion depths Di established by numerical simulation under the condition that the invasion band resistivity Rxo is 3 ohm-meters in an example of a method for extracting the depth of mud invasion into a formation in an oil well drilling according to an embodiment of the present invention;
FIG. 8 is an exemplary plot of array lateral resistivity log data 1 at mud invasion depth calculated by numerical simulation in an example of a method of extracting mud invasion depth in an oil well borehole according to an embodiment of the present invention, projected on an intersection plot of RLA5/RLA1 and RLA3/RLA 1;
FIG. 9 is an exemplary plot of array lateral resistivity log data 2 at mud invasion depth calculated by numerical simulation in an example of a method of extracting mud invasion depth in an oil well borehole according to an embodiment of the present invention, projected on an intersection plot of RLA5/RLA1 and RLA3/RLA 1;
FIG. 10 is an exemplary plot of the projection of array lateral resistivity log data 3 on the cross plot of RLA5/RLA1 and RLA3/RLA1 under numerical simulation calculations of mud invasion depth conditions in an example of a method of extracting mud invasion depth in an oil well borehole according to an embodiment of the present invention;
FIG. 11 is an exemplary graph of mud invasion depth determined by selecting an appropriate cross-plot from the determined mud invasion levels for array lateral resistivity log data 1 under mud invasion depth conditions calculated by numerical simulation in an example of a method of extracting mud invasion depth in an oil well drilling according to an embodiment of the present invention;
FIG. 12 is an exemplary graph of mud invasion depth determined by selecting an appropriate cross-plot from the determined mud invasion levels for array lateral resistivity log data 2 under mud invasion depth conditions calculated by numerical simulation in an example of a method of extracting mud invasion depth in an oil well drilling according to an embodiment of the present invention;
FIG. 13 is an exemplary graph of mud invasion depth determined by numerical simulation of array lateral resistivity log data 3 under mud invasion depth conditions according to a determined mud invasion level selecting an appropriate cross-plot in an example of a method of extracting mud invasion depth in an oil well drilling according to an embodiment of the present invention;
FIG. 14 is an exemplary graph of mud invasion depth from an oil well by processing actual measured array lateral resistivity log data in an example of a method of extracting mud invasion depth from an oil well according to an embodiment of the present invention;
FIG. 15 is a schematic view of an apparatus for extracting depth of mud invasion into a formation in an oil well according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.
As shown in fig. 1, a schematic diagram of a method for extracting depth of mud invasion into a formation in an oil well and fig. 2, a flowchart of a method for extracting depth of mud invasion into a formation in an oil well according to an embodiment of the present invention, the embodiment of the present invention provides a method and an apparatus for extracting depth of mud invasion into a formation in an oil well, which uses array lateral electrical logging data to establish a library of intersection maps of resistivity ratios, so as to realize accurate and rapid extraction of depth of mud invasion into a formation, the method includes:
step 101: acquiring array lateral resistivity logging information;
step 102: acquiring a resistivity ratio cross plot from a pre-established gallery according to the invaded zone resistivity reflected by the array lateral resistivity logging data, wherein the gallery comprises a plurality of invaded zone resistivity and resistivity ratio cross plots established by resistivity curves of different detection depths under each invaded zone resistivity condition;
step 103: determining the depth of the pre-estimated mud invasion stratum according to the array lateral resistivity logging information and the obtained resistivity ratio intersection map;
step 104: and selecting a resistivity ratio cross plot which is adaptive to the estimated mud invasion depth of the stratum from the map library according to the estimated mud invasion depth of the stratum and the array lateral resistivity logging information, and extracting the actual mud invasion depth of the stratum from the selected resistivity ratio cross plot.
According to the method for extracting the depth of the mud invasion stratum in the petroleum drilling, the array lateral resistivity logging information is utilized, a foundation is provided for rapidly calculating and extracting the depth of the mud invasion stratum according to a map library of a resistivity ratio intersection map which is pre-established by simulation, the mud invasion stratum depth is estimated and judged, the resistivity ratio intersection map is further utilized, the actual depth of the mud invasion stratum is accurately, simply and rapidly extracted, and the requirement for accurately and rapidly quantitatively evaluating the mud invasion depth is met.
In the implementation of the method for extracting the depth of the mud invasion into the formation in the oil well, as shown in S202 of fig. 2, the array lateral resistivity logging data may be obtained by measuring with an array lateral resistivity logging instrument in the oilfield field.
When the method for extracting the depth of mud invasion into the formation in the oil drilling is specifically implemented, as shown in S201 of fig. 2, the resistivity ratio cross plot is obtained from a pre-established library according to the invaded resistivity reflected by the array lateral resistivity logging data, wherein the library comprises a plurality of invaded resistivity and resistivity ratio cross plots established by resistivity curves of different detection depths under each invaded resistivity condition, and the resistivity ratio cross plots can be pre-established through numerical simulation; in an embodiment, a resistivity ratio cross-plot may be obtained from a library using the invaded resistivity reflected by the array lateral resistivity log, wherein the library includes a plurality of invaded resistivity curves and resistivity ratio cross-plots established from resistivity curves at different depths of investigation under each invaded resistivity condition; in the embodiment of the invention, the graph library comprises resistivity ratio intersection graphs established by resistivity curves of different detection depths under the condition of a plurality of invaded zones of resistivity, the resistivity ratio intersection graphs are pre-established by utilizing numerical simulation, further, a three-dimensional finite element method can be adopted for numerical simulation, the resistivity ratio intersection graphs are pre-established, a foundation is provided for fast calculating and extracting the depth of the mud invaded stratum, and when the method is actually applied, the pre-established graph library is directly adopted, so that the actual depth of the mud invaded stratum can be fast calculated and extracted; in an embodiment, a resistivity ratio cross plot established by resistivity curves of different probing depths under a plurality of invaded belt resistivity conditions can be simulated by numerical simulation by adopting a three-dimensional finite element method. For example, in an embodiment gallery may include: a first resistivity ratio cross plot, a second resistivity ratio cross plot, a third resistivity ratio cross plot, and a fourth resistivity ratio cross plot; in an example of the embodiment of the present invention, a three-dimensional finite element method is used to perform numerical simulation to simulate a resistivity ratio intersection graph established by resistivity curves of different probing depths Di under a plurality of invaded belt resistivity Rxo conditions:
first resistivity ratio cross plot: the resistivity ratios of RLA5/RLA1 and RLA3/RLA1 are crossed;
second resistivity ratio cross plot: the resistivity ratios of RLA5/RLA3 and RLA4/RLA3 are crossed;
third resistivity ratio cross plot: the resistivity ratios of RLA5/RLA2 and RLA4/RLA2 are crossed;
fourth resistivity ratio cross plot: the resistivity ratios of RLA4/RLA1 and RLA3/RLA1 are crossed.
In the specific implementation of the method for extracting the depth of the mud invading the stratum in the oil drilling, as shown in S203 of fig. 2, the estimated depth of the mud invading the stratum is determined according to the intersection of the array lateral resistivity logging information and the acquired resistivity ratio.
In the specific implementation of the method for extracting the depth of the mud invading the formation in the oil drilling, as shown in S204, S205 and S206 of fig. 2, according to the estimated depth of the mud invading the formation and the array lateral resistivity logging data, a resistivity ratio cross plot corresponding to the estimated depth of the mud invading the formation is selected from the map library, the actual depth of the mud invading the formation is extracted from the selected resistivity ratio cross plot, in the embodiment, on the basis of the estimated depth of the mud invading the formation, the acquired array lateral resistivity logging data is combined, a resistivity ratio cross plot corresponding to the estimated depth of the mud invading the formation is selected from the map library, and the actual depth of the mud invading the formation is extracted from the selected resistivity ratio cross plot.
The array lateral resistivity log data obtained by the method can comprise the following steps: the obtaining of a cross-plot of resistivity ratios from a pre-established library of resistivity values based on invaded zone resistivity reflected by the array lateral resistivity log data as described above may include, in one embodiment: estimating the invaded belt resistivity according to the mud resistivity; and determining the invaded zone resistivity which is the same as the estimated invaded zone resistivity in the map library, and acquiring a resistivity ratio cross map from the resistivity ratio cross map corresponding to the invaded zone resistivity, wherein the resistivity ratio cross map comprises a resistivity curve at a low detection depth, a resistivity curve at a medium detection depth and a resistivity curve at a high detection depth.
In an embodiment, the invaded zone resistivity may be estimated according to the mud resistivity Rm, and then the invaded zone resistivity identical to the estimated invaded zone resistivity is determined from the library according to the estimated invaded zone resistivity, and a resistivity ratio cross-plot is obtained in a resistivity ratio cross-plot corresponding to the invaded zone resistivity, the resistivity ratio cross-plot includes a resistivity curve at a low probing depth, a resistivity curve at a medium probing depth and a resistivity curve at a high probing depth, in an embodiment, the resistivity curves may include a plurality of curves, for example, in an example of the embodiment of the present invention, the resistivity curves may include 5 resistivity curves: RLA1, RLA2, RLA3, RLA4, and RLA5, the depth of detection from RLA1 to RLA5 is gradually increased; the resistivity curve with low detection depth corresponds to RLA1, the resistivity curve with medium detection depth corresponds to RLA3, the resistivity curve with high detection depth corresponds to RLA5, and geological information corresponding to the resistivity curve under the condition of the whole detection depth can be reflected more comprehensively by setting the resistivity curves with low, medium and high detection depths. When a resistivity ratio cross map is formed, selecting one of the resistivity curves of the low, medium and high detection depths as a denominator and the other two resistivity curves as numerators, determining two resistivity ratios, and then establishing the resistivity ratio cross map according to the two resistivity ratios; in an example of the embodiment of the present invention, a resistivity ratio is obtained by taking a resistivity curve RLA1 with a low probing depth as a denominator, a resistivity curve with a medium probing depth corresponding to RLA3 and a resistivity curve with a high probing depth corresponding to RLA5 as numerators: RLA5/RLA1, RLA3/RLA1, then RLA3/RLA1 is taken as a horizontal axis, RLA5/RLA1 is taken as a vertical axis, and an LA5/RLA1 and RLA3/RLA1 resistivity ratio intersection graph is established.
Next, the obtaining of the array lateral resistivity logging data may further include: a resistivity curve; determining an estimated depth of invasion of the mud into the formation based on the array lateral resistivity log and the obtained resistivity ratio cross-plot may include, in one embodiment: and determining the depth value corresponding to the intersection point of the resistivity curve and the obtained resistivity ratio intersection map as the estimated depth of the mud invading the stratum. In implementation, after a resistivity ratio cross map is obtained, the resistivity curve is projected onto the obtained resistivity ratio cross map, and the depth value corresponding to the intersection point of the resistivity curve and the obtained resistivity ratio cross map is determined as the estimated depth of the mud invading the stratum. In an embodiment, the resistivity curve is the resistivity curve of the selected low, medium and high detection depths, and the resistivity curves of the low, medium and high detection depths are projected onto the obtained resistivity ratio intersection map to obtain an intersection point, and a value of the intersection point is an estimated depth value of the mud invading the formation. In one example of an embodiment of the present invention, RLA1, RLA3, and RLA5 are projected onto LA5/RLA1 and RLA3/RLA1 resistivity ratio intersection maps to obtain an intersection point whose value is determined as an estimate of the depth of invasion of the mud into the formation.
Based on the estimated depth of the mud into the formation, selecting a resistivity ratio cross plot from a library according to the estimated depth of the mud into the formation and the array lateral resistivity log data, which may include, in one embodiment: calculating the invaded zone resistivity according to the mud resistivity and a weight value in the array lateral resistivity logging data, wherein the weight value is related to the geological property reflected by the array lateral resistivity logging data; and determining the invaded zone resistivity which is the same as the calculated invaded zone resistivity in the map library, and selecting a resistivity ratio cross map according to the estimated depth of the mud invaded stratum in the resistivity ratio cross map corresponding to the invaded zone resistivity, wherein the resistivity ratio cross map comprises a resistivity curve of the detection depth corresponding to the estimated depth of the mud invaded stratum. In an embodiment, the resistivity of the invaded zone during actual measurement is calculated according to the resistivity and the weight value of the slurry in the acquired array lateral resistivity logging data, then the calculated resistivity of the invaded zone is compared with the resistivity of the invaded zone in a map library, the resistivity of the invaded zone in the map library, which is the same as the calculated resistivity of the invaded zone, is selected, then a resistivity ratio cross-plot corresponding to the resistivity of the invaded zone is found in the map library, and then a resistivity ratio cross-plot is selected according to the estimated depth of the slurry invaded stratum, wherein the resistivity ratio cross-plot comprises a resistivity curve of a detection depth corresponding to the estimated depth of the slurry invaded stratum. In an embodiment, the estimated depth of mud invasion into the formation may be ranked, for example, the estimated depth of mud invasion into the formation may be ranked into three levels: the first invasion degree, the second invasion degree and the third invasion degree are respectively corresponding to different resistivity ratio cross plots. In one example of an embodiment of the present invention, the first degree of invasiveness is greater than 0.8 meters, the second degree of invasiveness is between 0.8 meters and 0.3 meters, and the third degree of invasiveness is less than 0.8 meters.
In practicing the foregoing extracting the actual mud invasion depth from the selected resistivity ratio cross-plot, in one embodiment, may include: and determining the depth value corresponding to the intersection point of the resistivity curve in the array lateral resistivity logging data and the selected resistivity ratio intersection map as the actual depth of the mud invading the stratum.
In implementing the foregoing resistivity ratio cross-plot corresponding to resistivity of the invaded zone, selecting a resistivity ratio cross-plot based on the estimated depth of mud invasion into the formation may, in one embodiment, include: dividing the intrusion level of the estimated depth of the mud invading the stratum, wherein the intrusion level is in direct proportion to the estimated depth of the mud invading the stratum; dividing depth levels for different detection depths under the condition of each invaded belt resistivity in the image library, wherein the depth levels are in direct proportion to the detection depths; selecting a resistivity ratio cross-plot from the resistivity ratio cross-plots corresponding to the invaded zone resistivity, the resistivity ratio cross-plot including resistivity curves for probe depths at depth levels equivalent to the invasion levels for the predicted mud invaded formation depths.
In an example of the embodiment of the present invention, the extracting of the actual invasion degree of the slurry on the basis that the estimated invasion depth of the slurry into the formation is divided into three levels may include:
during the first invasion degree, RLA1 or RLA2 in the array lateral log data is used as an approximate value of the invasion band resistivity Rxo, and the intersection graph of RLA5/RLA3 and RLA4/RLA3 corresponding to different mud invasion depths under the condition of the invasion band resistivity Rxo is selected to determine the invasion depth of the mud into the stratum;
during the second invasion degree, taking RLA1 in the array lateral logging data as an approximate value of the invasion band resistivity Rxo, and selecting an intersection graph of RLA5/RLA2 and RLA4/RLA2 corresponding to different mud invasion depths under the condition of the invasion band resistivity Rxo to determine the depth of the mud invasion stratum;
and in the third invasion degree, the RLA1 in the array lateral log data is used as an approximate value of the invasion band resistivity Rxo, and the intersection graph of the RLA4/RLA1 and the RLA3/RLA1 corresponding to different mud invasion depths under the condition of the invasion band resistivity Rxo is selected to determine the depth of the mud invasion stratum.
Furthermore, the error of the final extraction result of the depth of the mud invading the stratum, which is influenced by the selection of the invaded zone resistivity Rxo value, can be controlled within 5 percent; the accurate extraction of the depth of invasion of the mud into the formation is achieved by further selecting a suitable resistivity ratio cross plot in a library after the classification of the mud invasion level.
As shown in fig. 3-14, the embodiment of the present invention further provides an example of a specific application: in this example, fig. 3 is an example of a cross plot of RLA5/RLA1 and RLA3/RLA1 at different invasion depths Di established by numerical simulation under the condition that the invasion band resistivity Rxo is 3 ohm-meters in an example of a method for extracting the depth of mud invasion into a formation in an oil well according to an embodiment of the present invention; FIG. 4 is an example of a cross-plot of RLA5/RLA3 and RLA4/RLA3 at different invasion depths Di established by numerical simulation under the condition that the invasion band resistivity Rxo is 3 ohm-meters in an example of a method for extracting the depth of mud invasion into a formation in an oil well drilling according to an embodiment of the present invention; FIG. 5 is an example of a cross-plot of RLA5/RLA2 and RLA4/RLA2 at different invasion depths Di established by numerical simulation under the condition that the invasion band resistivity Rxo is 3 ohm-meters in an example of a method for extracting the depth of mud invasion into a formation in an oil well drilling according to an embodiment of the present invention; FIG. 6 is an example of a cross-plot of RLA4/RLA1 and RLA3/RLA1 at different invasion depths Di established by numerical simulation under the condition that the invasion band resistivity Rxo is 3 ohm-meters in an example of a method for extracting the depth of mud invasion into a formation in an oil well drilling according to an embodiment of the present invention; FIG. 7 is an example of a cross-plot of RLA5/RLA2 and RLA3/RLA2 at different invasion depths Di established by numerical simulation under the condition that the invasion band resistivity Rxo is 3 ohm-meters in an example of a method for extracting the depth of mud invasion into a formation in an oil well drilling according to an embodiment of the present invention; FIG. 8 is an exemplary plot of array lateral resistivity log data 1 at mud invasion depth calculated by numerical simulation in an example of a method of extracting mud invasion depth in an oil well borehole according to an embodiment of the present invention, projected on an intersection plot of RLA5/RLA1 and RLA3/RLA 1; FIG. 9 is an exemplary plot of array lateral resistivity log data 2 at mud invasion depth calculated by numerical simulation in an example of a method of extracting mud invasion depth in an oil well borehole according to an embodiment of the present invention, projected on an intersection plot of RLA5/RLA1 and RLA3/RLA 1; FIG. 10 is an exemplary plot of the projection of array lateral resistivity log data 3 on the cross plot of RLA5/RLA1 and RLA3/RLA1 under numerical simulation calculations of mud invasion depth conditions in an example of a method of extracting mud invasion depth in an oil well borehole according to an embodiment of the present invention; FIG. 11 is an exemplary graph of mud invasion depth determined by selecting an appropriate cross-plot from the determined mud invasion levels for array lateral resistivity log data 1 under mud invasion depth conditions calculated by numerical simulation in an example of a method of extracting mud invasion depth in an oil well drilling according to an embodiment of the present invention; FIG. 12 is an exemplary graph of mud invasion depth determined by selecting an appropriate cross-plot from the determined mud invasion levels for array lateral resistivity log data 2 under mud invasion depth conditions calculated by numerical simulation in an example of a method of extracting mud invasion depth in an oil well drilling according to an embodiment of the present invention; FIG. 13 is an exemplary graph of mud invasion depth determined by numerical simulation of array lateral resistivity log data 3 under mud invasion depth conditions according to a determined mud invasion level selecting an appropriate cross-plot in an example of a method of extracting mud invasion depth in an oil well drilling according to an embodiment of the present invention; FIG. 14 is an exemplary graph of mud invasion depth from an oil well by processing actual measured array lateral resistivity log data in an example of a method of extracting mud invasion depth from an oil well according to an embodiment of the present invention.
In the above example of the embodiment of the present invention, as shown in fig. 3 to 14, five resistivity curves RLA1, RLA2, RLA3, RLA4 and RLA5 measured by array lateral resistivity logging at depths of mud invasion into the formation of 1.0m, 0.65m and 0.26m under the conditions of invasion band resistivity Rxo of 3 ohm-meters and undisturbed formation resistivity of 32 ohm-meters are simulated and calculated by using a numerical simulation method.
Assuming a certain mud invasion zone resistivity Rxo, the intersection graphs of RLA5/RLA1 and RLA3/RLA1 are selected from a pre-established graph library of the intersection graphs, and the depth of the mud invasion stratum is estimated by using the intersection graphs according to array lateral resistivity logging data under different mud invasion depth conditions calculated by the numerical simulation, as shown in FIG. 7, FIG. 8 and FIG. 9. From the cross-plot, the predicted depths of mud invasion into the formation for the three cases were 1.05m, 0.6m and 0.2m, respectively.
And judging the invasion level of the mud according to the estimated invasion depth of the mud into the stratum, wherein the invasion levels in the three cases are respectively a first invasion degree, a second invasion degree and a third invasion degree. Selecting an appropriate cross-plot based on the determined mud invasion level:
(1) the first condition is a first invasion degree, RLA2 is used as an approximate value of the invaded zone resistivity Rxo, and the intersection graph of RLA5/RLA3 and RLA4/RLA3 corresponding to different mud invasion depths under the invaded zone resistivity Rxo is selected to determine the depth of the mud invasion formation;
(2) the second condition is the first invasion degree, RLA1 is used as an approximate value of the invaded zone resistivity Rxo, and the intersection graph of RLA5/RLA2 and RLA4/RLA2 corresponding to different mud invasion depths under the invaded zone resistivity Rxo is selected to determine the invasion depth of the mud;
(3) and in the third case, the first invasion degree is obtained, RLA1 is used as an approximate value of the invasion band resistivity Rxo, and the intersection graph of RLA4/RLA1 and RLA3/RLA1 corresponding to different mud invasion depths under the condition of the invasion band resistivity Rxo is selected to determine the invasion depth of the mud.
The selection of an appropriate cross-plot based on the determined mud invasion level determines the mud invasion depth as shown in figures 10, 11 and 12. From the figure, the invasion depths of the three cases are respectively 1.009m, 0.645m and 0.252m, and the error of the real value of the set formation model is less than 1 percent.
The numerical simulation method is used for explaining that the depth of the mud invading the stratum is determined by pre-establishing a gallery of intersection maps of resistivity ratios of different detection depths under different invaded zone resistivity conditions, judging the invasion level of the mud by estimating the invasion depth of the mud and further selecting a proper intersection map according to the invasion level of the mud. The precision of the method is greatly improved, the error of the depth of the extracted mud invading the stratum is less than 1% by utilizing the numerical simulation example result in the embodiment, and the depth of the mud invading the stratum can be accurately extracted under the condition that the invaded zone resistivity Rxo is unknown. In addition, the invention can greatly improve the calculation speed because the gallery of the intersection graph is established in advance. FIG. 14 is an example of processing actual measured array lateral resistivity log data to extract depth of mud invasion into a formation for a total of 5 meters of formation in less than 0.5 seconds.
Embodiments of the present invention further provide a computer device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, the method for extracting a depth of a mud invasion formation in an oil well is implemented.
Embodiments of the present invention also provide a computer-readable storage medium storing a computer program for implementing the above-described method for extracting a depth of a mud invasion formation in an oil well.
Embodiments of the present invention also provide an apparatus for extracting depth of mud invasion into a formation in an oil well, as described in the examples below. Because the principle of solving the problems of the device is similar to the method for extracting the depth of the mud invading the stratum in the oil drilling, the implementation of the device can refer to the implementation of the method for extracting the depth of the mud invading the stratum in the oil drilling, and repeated details are omitted.
As shown in fig. 15, a schematic diagram of an apparatus for extracting a depth of invasion of mud into a formation in an oil well according to an embodiment of the present invention is also provided, in which the apparatus for extracting a depth of invasion of mud into a formation in an oil well includes:
the data acquisition module 1501 is used for acquiring array lateral resistivity logging data;
a resistivity ratio cross plot acquisition module 1502 configured to acquire a resistivity ratio cross plot from a pre-established library according to the invaded resistivity reflected by the array lateral resistivity logging data, where the library includes a plurality of invaded resistivity and resistivity ratio cross plots established by resistivity curves of different detection depths under each invaded resistivity condition;
the estimated mud invasion depth determination module 1503 is used for determining the estimated mud invasion depth according to the array lateral resistivity logging data and the acquired resistivity ratio intersection map;
and the actual mud invasion depth extraction module 1504 is used for selecting a resistivity ratio cross plot adaptive to the estimated mud invasion depth from the map library according to the estimated mud invasion depth and the array lateral resistivity logging information, and extracting the actual mud invasion depth from the selected resistivity ratio cross plot.
In one embodiment, the array lateral resistivity log data comprises: resistivity of the slurry;
a resistivity ratio cross-plot acquisition module, specifically configured to:
estimating the invaded belt resistivity according to the mud resistivity;
and determining the invaded zone resistivity which is the same as the estimated invaded zone resistivity in the map library, and acquiring a resistivity ratio cross map from the resistivity ratio cross map corresponding to the invaded zone resistivity, wherein the resistivity ratio cross map comprises a resistivity curve at a low detection depth, a resistivity curve at a medium detection depth and a resistivity curve at a high detection depth.
In one embodiment, the array lateral resistivity log further comprises: a resistivity curve;
the estimated mud invasion depth determination module is specifically used for:
and determining the depth value corresponding to the intersection point of the resistivity curve and the obtained resistivity ratio intersection map as the estimated depth of the mud invading the stratum.
In one embodiment, the actual mud invasion formation depth extraction module is specifically configured to:
calculating the invaded zone resistivity according to the mud resistivity and a weight value in the array lateral resistivity logging data, wherein the weight value is related to the geological property reflected by the array lateral resistivity logging data;
and determining the invaded zone resistivity which is the same as the calculated invaded zone resistivity in the map library, and selecting a resistivity ratio cross map according to the estimated depth of the mud invaded stratum in the resistivity ratio cross map corresponding to the invaded zone resistivity, wherein the resistivity ratio cross map comprises a resistivity curve of the detection depth corresponding to the estimated depth of the mud invaded stratum.
In one embodiment, the actual mud invasion formation depth extraction module is further operable to:
and determining the depth value corresponding to the intersection point of the resistivity curve in the array lateral resistivity logging data and the selected resistivity ratio intersection map as the actual depth of the mud invading the stratum.
In one embodiment, the actual mud invasion formation depth extraction module is further operable to:
dividing the intrusion level of the estimated depth of the mud invading the stratum, wherein the intrusion level is in direct proportion to the estimated depth of the mud invading the stratum;
dividing depth levels for different detection depths under the condition of each invaded belt resistivity in the image library, wherein the depth levels are in direct proportion to the detection depths;
selecting a resistivity ratio cross-plot from the resistivity ratio cross-plots corresponding to the invaded zone resistivity, the resistivity ratio cross-plot including resistivity curves for probe depths at depth levels equivalent to the invasion levels for the predicted mud invaded formation depths.
In summary, the method and the device for extracting the depth of mud invasion into the stratum in the petroleum drilling provided by the embodiment of the invention provide a basis for rapidly calculating and extracting the depth of mud invasion into the stratum by utilizing array lateral resistivity logging information and according to the library of the resistivity ratio intersection map pre-established by simulation, further estimate the depth of mud invasion into the stratum to judge the mud invasion level, further utilize the resistivity ratio intersection map, realize accurate, simple and rapid extraction of the actual depth of mud invasion into the stratum, and meet the requirement of accurately and rapidly quantitatively evaluating the mud invasion depth.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (14)
1. A method of extracting depth of invasion of a slurry into a formation in an oil well, comprising:
acquiring array lateral resistivity logging information;
acquiring a resistivity ratio cross plot from a pre-established gallery according to the invaded zone resistivity reflected by the array lateral resistivity logging data, wherein the gallery comprises a plurality of invaded zone resistivity and resistivity ratio cross plots established by resistivity curves of different detection depths under each invaded zone resistivity condition;
determining the depth of the pre-estimated mud invasion stratum according to the array lateral resistivity logging information and the obtained resistivity ratio intersection map;
and selecting a resistivity ratio cross plot which is adaptive to the estimated mud invasion depth of the stratum from the map library according to the estimated mud invasion depth of the stratum and the array lateral resistivity logging information, and extracting the actual mud invasion depth of the stratum from the selected resistivity ratio cross plot.
2. The method of extracting depth of mud invasion into a formation in an oil well bore according to claim 1,
the array lateral resistivity logging data comprises: resistivity of the slurry;
obtaining a resistivity ratio cross plot from a pre-established library according to the invaded zone resistivity reflected by the array lateral resistivity logging data, comprising:
estimating the invaded belt resistivity according to the mud resistivity;
and determining the invaded zone resistivity which is the same as the estimated invaded zone resistivity in the map library, and acquiring a resistivity ratio cross map from the resistivity ratio cross map corresponding to the invaded zone resistivity, wherein the resistivity ratio cross map comprises a resistivity curve at a low detection depth, a resistivity curve at a medium detection depth and a resistivity curve at a high detection depth.
3. The method of extracting depth of mud invasion into a formation in an oil well borehole of claim 1, wherein said array of lateral resistivity log data further comprises: a resistivity curve;
determining the estimated depth of the mud invading the stratum according to the array lateral resistivity logging information and the obtained resistivity ratio intersection map, and the method comprises the following steps:
and determining the depth value corresponding to the intersection point of the resistivity curve and the obtained resistivity ratio intersection map as the estimated depth of the mud invading the stratum.
4. A method of extracting depth of mud invasion into a formation in an oil well drilling according to any one of claims 1 to 3, wherein selecting from the library a resistivity ratio cross-plot corresponding to the estimated depth of mud invasion into the formation based on the estimated depth of mud invasion into the formation and the array lateral resistivity log data comprises:
calculating the invaded zone resistivity according to the mud resistivity and a weight value in the array lateral resistivity logging data, wherein the weight value is related to the geological property reflected by the array lateral resistivity logging data;
and determining the invaded zone resistivity which is the same as the calculated invaded zone resistivity in the map library, and selecting a resistivity ratio cross map according to the estimated depth of the mud invaded stratum in the resistivity ratio cross map corresponding to the invaded zone resistivity, wherein the resistivity ratio cross map comprises a resistivity curve of the detection depth corresponding to the estimated depth of the mud invaded stratum.
5. The method of extracting depth of mud invasion into a formation in an oil well bore according to claim 4, wherein extracting actual depth of mud invasion from the selected resistivity ratio cross plot comprises:
and determining the depth value corresponding to the intersection point of the resistivity curve in the array lateral resistivity logging data and the selected resistivity ratio intersection map as the actual depth of the mud invading the stratum.
6. The method of extracting depth of mud invasion into the earth formation of an oil well borehole according to claim 4, wherein selecting a cross plot of resistivity ratios in the cross plot of resistivity ratios corresponding to resistivity of the invaded zone based on the estimated depth of mud invasion into the earth formation comprises:
dividing the intrusion level of the estimated depth of the mud invading the stratum, wherein the intrusion level is in direct proportion to the estimated depth of the mud invading the stratum;
dividing depth levels for different detection depths under the condition of each invaded belt resistivity in the image library, wherein the depth levels are in direct proportion to the detection depths;
selecting a resistivity ratio cross-plot from the resistivity ratio cross-plots corresponding to the invaded zone resistivity, the resistivity ratio cross-plot including resistivity curves for probe depths at depth levels equivalent to the invasion levels for the predicted mud invaded formation depths.
7. An apparatus for extracting depth of mud invasion into a formation in an oil well, comprising:
the data acquisition module is used for acquiring array lateral resistivity logging data;
the resistivity ratio cross plot acquisition module is used for acquiring a resistivity ratio cross plot from a pre-established gallery according to the invaded resistivity reflected by the array lateral resistivity logging data, wherein the gallery comprises a plurality of invaded resistivity and resistivity ratio cross plots established by resistivity curves of different detection depths under the condition of each invaded resistivity;
the estimated mud invasion depth determination module is used for determining the estimated mud invasion depth according to the array lateral resistivity logging information and the acquired resistivity ratio intersection map;
and the actual mud invasion depth extraction module is used for selecting a resistivity ratio cross map adaptive to the estimated mud invasion depth from the map library according to the estimated mud invasion depth and the array lateral resistivity logging information, and extracting the actual mud invasion depth from the selected resistivity ratio cross map.
8. The apparatus for extracting depth of mud invasion into a formation in an oil well drilling of claim 7,
the array lateral resistivity logging data comprises: resistivity of the slurry;
a resistivity ratio cross-plot acquisition module, specifically configured to:
estimating the invaded belt resistivity according to the mud resistivity;
and determining the invaded zone resistivity which is the same as the estimated invaded zone resistivity in the map library, and acquiring a resistivity ratio cross map from the resistivity ratio cross map corresponding to the invaded zone resistivity, wherein the resistivity ratio cross map comprises a resistivity curve at a low detection depth, a resistivity curve at a medium detection depth and a resistivity curve at a high detection depth.
9. The apparatus for extracting depth of mud invasion into a formation in an oil well drilling of claim 7,
the array lateral resistivity logging data further comprises: a resistivity curve;
the estimated mud invasion depth determination module is specifically used for:
and determining the depth value corresponding to the intersection point of the resistivity curve and the obtained resistivity ratio intersection map as the estimated depth of the mud invading the stratum.
10. The apparatus for extracting depth of mud invasion into a formation in an oil well drilling according to any one of claims 7 to 9,
the actual mud invasion depth extraction module is specifically used for:
calculating the invaded zone resistivity according to the mud resistivity and a weight value in the array lateral resistivity logging data, wherein the weight value is related to the geological property reflected by the array lateral resistivity logging data;
and determining the invaded zone resistivity which is the same as the calculated invaded zone resistivity in the map library, and selecting a resistivity ratio cross map according to the estimated depth of the mud invaded stratum in the resistivity ratio cross map corresponding to the invaded zone resistivity, wherein the resistivity ratio cross map comprises a resistivity curve of the detection depth corresponding to the estimated depth of the mud invaded stratum.
11. The apparatus for extracting depth of mud invasion into a formation in an oil well drilling of claim 10,
and the actual mud invasion depth extraction module is also used for:
and determining the depth value corresponding to the intersection point of the resistivity curve in the array lateral resistivity logging data and the selected resistivity ratio intersection map as the actual depth of the mud invading the stratum.
12. The apparatus for extracting depth of mud invasion into a formation in an oil well drilling of claim 10,
and the actual mud invasion depth extraction module is also used for:
dividing the intrusion level of the estimated depth of the mud invading the stratum, wherein the intrusion level is in direct proportion to the estimated depth of the mud invading the stratum;
dividing depth levels for different detection depths under the condition of each invaded belt resistivity in the image library, wherein the depth levels are in direct proportion to the detection depths;
selecting a resistivity ratio cross-plot from the resistivity ratio cross-plots corresponding to the invaded zone resistivity, the resistivity ratio cross-plot including resistivity curves for probe depths at depth levels equivalent to the invasion levels for the predicted mud invaded formation depths.
13. A computer apparatus comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor when executing the computer program implementing the method of extracting mud invasion depth in an oil well bore according to any one of claims 1 to 6.
14. A computer readable storage medium storing a computer program for executing a method of extracting a depth of mud invasion into a formation in an oil well drilling according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911022633.1A CN112711076B (en) | 2019-10-25 | 2019-10-25 | Method and apparatus for extracting depth of penetration of mud into formation in petroleum drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911022633.1A CN112711076B (en) | 2019-10-25 | 2019-10-25 | Method and apparatus for extracting depth of penetration of mud into formation in petroleum drilling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112711076A true CN112711076A (en) | 2021-04-27 |
| CN112711076B CN112711076B (en) | 2023-08-22 |
Family
ID=75540655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911022633.1A Active CN112711076B (en) | 2019-10-25 | 2019-10-25 | Method and apparatus for extracting depth of penetration of mud into formation in petroleum drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112711076B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7027967B1 (en) * | 2000-06-02 | 2006-04-11 | Schlumberger Technology Corporation | Method and system for indicating anisotropic resistivity in an earth formation |
| CN103590822A (en) * | 2012-08-16 | 2014-02-19 | 中国石油化工股份有限公司 | Method of judging low-resistivity annulus formed in formation |
| MX2016011217A (en) * | 2014-04-11 | 2016-11-30 | Halliburton Energy Services Inc | Estimating subsurface formation and invasion properties. |
| US20170235011A1 (en) * | 2014-04-11 | 2017-08-17 | Halliburton Energy Services, Inc. | Estimating subsurface formation and invasion properties |
| CN107451313A (en) * | 2016-06-01 | 2017-12-08 | 中国石油化工股份有限公司 | A kind of stratum slurry compounding determination methods and system based on adaptive model |
-
2019
- 2019-10-25 CN CN201911022633.1A patent/CN112711076B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7027967B1 (en) * | 2000-06-02 | 2006-04-11 | Schlumberger Technology Corporation | Method and system for indicating anisotropic resistivity in an earth formation |
| CN103590822A (en) * | 2012-08-16 | 2014-02-19 | 中国石油化工股份有限公司 | Method of judging low-resistivity annulus formed in formation |
| MX2016011217A (en) * | 2014-04-11 | 2016-11-30 | Halliburton Energy Services Inc | Estimating subsurface formation and invasion properties. |
| US20170235011A1 (en) * | 2014-04-11 | 2017-08-17 | Halliburton Energy Services, Inc. | Estimating subsurface formation and invasion properties |
| CN107451313A (en) * | 2016-06-01 | 2017-12-08 | 中国石油化工股份有限公司 | A kind of stratum slurry compounding determination methods and system based on adaptive model |
Non-Patent Citations (8)
| Title |
|---|
| PEIQIANG ZHAO ET AL.: "Study on array laterolog response simulation and mud-filtrate invasion correction", ADVANCES IN GEO-ENERGY RESEARCH, vol. 3, no. 2, pages 175 - 186 * |
| ZHOU FENG ET AL.: "Model and method of permeability evaluation based on mud invasion effects", APPLIED GEOPHYSICS, vol. 12, no. 4, pages 482 - 492, XP035598711, DOI: 10.1007/s11770-015-0516-y * |
| 仵杰 等: "泥浆侵入地层中高分辨率感应测井响应特征的正演分析", 《测井技术》, vol. 33, no. 3, pages 212 - 217 * |
| 李长喜 等: "淡水钻井液侵入对双感应和双侧向测井响应的影响", 《石油勘探与开发》, vol. 34, no. 5, pages 603 - 608 * |
| 杨映洲 等: "高分辨率阵列感应在低渗透含水气藏中的应用", 《石油化工应用》, vol. 33, no. 12, pages 37 - 41 * |
| 范宜仁 等: "高分辨率阵列侧向测井响应数值模拟", 《测井技术》, vol. 33, no. 4, pages 333 - 336 * |
| 范翔宇 等: "测井计算钻井泥浆侵入深度的新方法研究", 《天然气工业》, vol. 24, no. 5, pages 68 - 70 * |
| 陈立军 等: "利用阵列感应测井估算永宁地区砂岩泥浆侵入深度", 《测井技术》, vol. 40, no. 6, pages 699 - 703 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112711076B (en) | 2023-08-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106951660B (en) | Sea facies clastic rock horizontal well reservoir logging interpretation method and device | |
| US8364447B2 (en) | Method, program and computer system for conciliating hydrocarbon reservoir model data | |
| EP3077618B1 (en) | Tuning digital core analysis to laboratory results | |
| US10087723B2 (en) | Methodology for building realistic numerical forward stratigraphic models in data sparse environment | |
| CN103410504A (en) | Method and device for determining true resistivity of horizontal well/highly-deviated well | |
| US11567232B2 (en) | Method for providing a calibrated rock-physics model of a subsoil | |
| CN108873065B (en) | Sandstone high-quality reservoir prediction method and device | |
| CN108629459B (en) | Method and device for detecting hydrocarbon-containing pore of reservoir | |
| CN113775326B (en) | Method and device for evaluating movable water saturation, electronic equipment and medium | |
| CN115390155A (en) | Well logging interpretation method, device, electronic equipment and medium for heterogeneous reservoir | |
| CN110632654B (en) | Method and device for determining oil-containing boundary of broken block trap | |
| CN111239809B (en) | Dominant reservoir determination method and system based on attribute fusion principle | |
| CN109630089B (en) | Horizontal well geological structure recognition method and device | |
| CN109991663B (en) | Work area seismic velocity body correction method and device | |
| CN110910267A (en) | Method and device for determining marine carbonate rock interlayer | |
| CN112711076B (en) | Method and apparatus for extracting depth of penetration of mud into formation in petroleum drilling | |
| CN114876454A (en) | Method and system for identifying complex lithologic water flooded layer of highly deviated well | |
| CN110308488B (en) | Method and system for determining cave filling degree | |
| CN113495293B (en) | Reservoir fluid prediction method and device | |
| CN113267810B (en) | Seismic exploration full-depth velocity modeling method and device | |
| CN112147698B (en) | Crack development zone identification and feature determination method and system | |
| CN112379437B (en) | Shale reservoir anisotropy parameter solving method and device | |
| US10802177B2 (en) | Evaluating hydrocarbon reserves using tool response models | |
| CN109281661B (en) | Quantitative evaluation method and device for double-laterolog | |
| CN115704916A (en) | Method and device for generating micro-amplitude construction diagram |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |