CN114595545A - Construction method and device for horizontal well heterogeneous stratum interpretation model - Google Patents
Construction method and device for horizontal well heterogeneous stratum interpretation model Download PDFInfo
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Abstract
The invention provides a construction method and a device of a horizontal well heterogeneous stratum interpretation model, wherein the method comprises the following steps: acquiring multi-well data of a work area where a horizontal well is located; selecting a target layer, and selecting a reservoir logging parameter value corresponding to the target layer from multi-well data of a work area where a horizontal well is located; determining the size of a same-level interpolation grid according to the reservoir logging parameter value; determining an interpolation range according to multi-well data of a work area where a horizontal well is located; according to the size of the same-layer interpolation grid, the interpolation range and the selected target layer, interpolating multi-well data of a work area where a horizontal well is located, and determining a stratum three-dimensional attribute body; cutting the stratum three-dimensional attribute body to determine a three-dimensional stratum section; unfolding a three-dimensional stratum section along a well track, and determining a two-dimensional anisotropic stratum model; and adjusting the two-dimensional anisotropic formation model according to the logging response characteristics, and determining a horizontal well heterogeneous formation interpretation model. The invention improves the construction and interpretation precision of the horizontal well stratum model.
Description
Technical Field
The invention relates to the technical field of petroleum logging, in particular to a construction method and a device of a horizontal well heterogeneous stratum interpretation model.
Background
This section is intended to provide a background or context to the embodiments of the invention that are recited in the claims. The description herein is not admitted to be prior art by inclusion in this section.
In the horizontal well interpretation process, firstly, a stratum interpretation model is constructed according to the logging response characteristics and the adjacent well contrast.
At present, for the construction of the stratum interpretation model, the existing software and technology assume that the stratum is a uniform model for horizontal well interpretation, that is, the stratum attribute values are considered to be uniform and unchanged in the same stratum, and this assumption is applicable to most of horizontal well interpretation stratums, but in clastic rock reservoirs, shale reservoirs and other stratums, the constructed model is inconsistent with the actual stratum, so that the interpretation accuracy is reduced.
Therefore, how to provide a new solution, which can solve the above technical problems, is a technical problem to be solved in the art.
Disclosure of Invention
The embodiment of the invention provides a construction method of a horizontal well heterogeneous stratum interpretation model, which improves construction and interpretation precision of the horizontal well stratum model, and comprises the following steps:
acquiring multi-well data of a work area where a horizontal well is located;
selecting a target layer, and selecting a reservoir logging parameter value corresponding to the target layer from multi-well data of a work area where a horizontal well is located;
determining the size of a same-level interpolation grid according to the reservoir logging parameter value;
determining an interpolation range according to multi-well data of a work area where a horizontal well is located;
according to the size of the same-layer interpolation grid, the interpolation range and the selected target layer, interpolating multi-well data of a work area where a horizontal well is located, and determining a stratum three-dimensional attribute body;
cutting the stratum three-dimensional attribute body to determine a three-dimensional stratum section;
unfolding a three-dimensional stratum section along a well track, and determining a two-dimensional anisotropic stratum model;
and adjusting the two-dimensional anisotropic formation model according to the logging response characteristics, and determining a horizontal well heterogeneous formation interpretation model.
The embodiment of the invention also provides a device for constructing the horizontal well heterogeneous stratigraphic interpretation model, which comprises the following steps:
the data acquisition module is used for acquiring multi-well data of a work area where the horizontal well is located;
the reservoir logging parameter value module is used for selecting a target layer and selecting a reservoir logging parameter value corresponding to the target layer from multi-well data of a work area where the horizontal well is located;
the same-level interpolation grid size determining module is used for determining the size of the same-level interpolation grid according to the reservoir logging parameter value;
the interpolation range determining module is used for determining an interpolation range according to multi-well data of a work area where the horizontal well is located;
the stratum three-dimensional attribute body determining module is used for interpolating multi-well data of a work area where the horizontal well is located according to the size of the same-layer interpolation grid, the interpolation range and the selected target layer to determine a stratum three-dimensional attribute body;
the three-dimensional stratum section determining module is used for segmenting the stratum three-dimensional attribute body and determining a three-dimensional stratum section;
the two-dimensional anisotropic stratum model determining module is used for unfolding a three-dimensional stratum section along a well track and determining a two-dimensional anisotropic stratum model;
and the horizontal well heterogeneous stratum interpretation model determining module is used for adjusting the two-dimensional anisotropic stratum model according to the logging response characteristics and determining the horizontal well heterogeneous stratum interpretation model.
The embodiment of the invention also provides computer equipment which comprises a memory, a processor and a computer program which is stored on the memory and can be operated on the processor, wherein the processor realizes the construction method of the horizontal well heterogeneous stratum interpretation model when executing the computer program.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program for executing the method for constructing a horizontal well heterogeneous formation interpretation model is stored in the computer-readable storage medium.
The method and the device for constructing the horizontal well heterogeneous stratum interpretation model provided by the embodiment of the invention comprise the following steps: firstly, acquiring multi-well data of a work area where a horizontal well is located; selecting a target layer, and selecting a reservoir logging parameter value corresponding to the target layer from multi-well data of a work area where the horizontal well is located; then, determining the size of a same-level interpolation grid according to the reservoir logging parameter value; determining an interpolation range according to the multi-well data of the work area where the horizontal well is located; next, interpolating multi-well data of a work area where the horizontal well is located according to the size of the same-layer interpolation grid, the interpolation range and the selected target layer, and determining a stratum three-dimensional attribute body; then, next, segmenting the stratum three-dimensional attribute body to determine a three-dimensional stratum section; then, expanding the three-dimensional stratum section along the well track to determine a two-dimensional anisotropic stratum model; and finally, adjusting the two-dimensional anisotropic formation model according to the logging response characteristics, and determining the horizontal well heterogeneous formation interpretation model. The embodiment of the invention provides a construction method of a horizontal well heterogeneous stratum interpretation model aiming at a heterogeneous stratum, which is characterized in that a heterogeneous stratum model is constructed by utilizing information such as multi-well curve data, stratum contrast and the like in a work area through spatial three-dimensional interpolation, so that the interpretation model is more in line with actual geological conditions; by utilizing the embodiment of the invention, a heterogeneous stratum model can be constructed in a clastic rock stratum and a shale reservoir according to the response characteristic difference of the curves based on the multi-well data, the stratum data and the like of the adjacent wells, and the construction and interpretation precision of the horizontal well stratum model is improved.
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 horizontal well heterogeneous stratum interpretation model construction method according to an embodiment of the invention.
Fig. 2 is a flowchart of a horizontal well heterogeneous formation interpretation model construction method according to an embodiment of the present invention.
Fig. 3 is a horizontal well and multi-well data schematic diagram of a horizontal well heterogeneous formation interpretation model construction method according to an embodiment of the invention.
FIG. 4 is a histogram anisotropy difference comparison diagram of a horizontal well heterogeneous formation interpretation model construction method according to an embodiment of the invention.
Fig. 5 is a schematic diagram of the judgment of the anisotropic difference scale of the construction method of the horizontal well heterogeneous formation interpretation model according to the embodiment of the invention.
FIG. 6 is a schematic diagram of a formation three-dimensional attribute body formed by three-dimensional attribute interpolation of a horizontal well heterogeneous formation interpretation model construction method according to an embodiment of the present invention.
Fig. 7 is a well trajectory surface schematic diagram of a horizontal well heterogeneous formation interpretation model construction method according to an embodiment of the present invention.
Fig. 8 is a schematic diagram of a three-dimensional stratigraphic section of a horizontal well heterogeneous stratigraphic interpretation model construction method according to an embodiment of the present invention.
Fig. 9 is a schematic stratigraphic section of a two-dimensional anisotropic stratigraphic model of a horizontal well heterogeneous stratigraphic interpretation model construction method according to an embodiment of the present invention.
Fig. 10 is a schematic diagram of an adjusted and output horizontal well heterogeneous stratum interpretation model in the method for constructing a horizontal well heterogeneous stratum interpretation model according to the embodiment of the present invention.
Fig. 11 is a schematic diagram of a computer device for operating a horizontal well heterogeneous formation interpretation model construction method implemented by the present invention.
Fig. 12 is a schematic diagram of a horizontal well heterogeneous formation interpretation model construction device according to an embodiment of the 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.
Fig. 1 is a schematic diagram of a horizontal well heterogeneous stratum interpretation model construction method according to an embodiment of the present invention, and as shown in fig. 1, the embodiment of the present invention provides a horizontal well heterogeneous stratum interpretation model construction method, which improves construction and interpretation precision of a horizontal well stratum model, and includes:
step 101: acquiring multi-well data of a work area where a horizontal well is located;
step 102: selecting a target layer, and selecting a reservoir logging parameter value corresponding to the target layer from multi-well data of a work area where a horizontal well is located;
step 103: determining the size of a same-level interpolation grid according to the reservoir logging parameter value;
step 104: determining an interpolation range according to multi-well data of a work area where a horizontal well is located;
step 105: according to the size of the same-layer interpolation grid, the interpolation range and the selected target layer, interpolating multi-well data of a work area where a horizontal well is located, and determining a stratum three-dimensional attribute body;
step 106: cutting the stratum three-dimensional attribute body to determine a three-dimensional stratum section;
step 107: unfolding a three-dimensional stratum section along a well track, and determining a two-dimensional anisotropic stratum model;
step 108: and adjusting the two-dimensional anisotropic formation model according to the logging response characteristics, and determining a horizontal well heterogeneous formation interpretation model.
The construction method of the horizontal well heterogeneous stratum interpretation model provided by the embodiment of the invention comprises the following steps: firstly, acquiring multi-well data of a work area where a horizontal well is located; selecting a target layer, and selecting a reservoir logging parameter value corresponding to the target layer from multi-well data of a work area where the horizontal well is located; then, determining the size of a same-level interpolation grid according to the reservoir logging parameter value; determining an interpolation range according to the multi-well data of the work area where the horizontal well is located; next, interpolating multi-well data of a work area where the horizontal well is located according to the size of the same-layer interpolation grid, the interpolation range and the selected target layer, and determining a stratum three-dimensional attribute body; then, next, segmenting the stratum three-dimensional attribute body to determine a three-dimensional stratum section; then, expanding the three-dimensional stratum section along the well track to determine a two-dimensional anisotropic stratum model; and finally, adjusting the two-dimensional anisotropic formation model according to the logging response characteristics, and determining the horizontal well heterogeneous formation interpretation model. The embodiment of the invention provides a construction method of a horizontal well heterogeneous stratum interpretation model aiming at a heterogeneous stratum, which is characterized in that a heterogeneous stratum model is constructed by utilizing information such as multi-well curve data, stratum contrast and the like in a work area through spatial three-dimensional interpolation, so that the interpretation model is more in line with actual geological conditions; by utilizing the embodiment of the invention, a heterogeneous stratum model can be constructed in a clastic rock stratum and a shale reservoir according to the response characteristic difference of the curves based on the multi-well data, the stratum data and the like of the adjacent wells, and the construction and interpretation precision of the horizontal well stratum model is improved.
Fig. 2 is a flowchart of a horizontal well heterogeneous formation interpretation model construction method according to an embodiment of the present invention, and as shown in fig. 2, when the horizontal well heterogeneous formation interpretation model construction method according to the embodiment of the present invention is specifically implemented, the specific implementation may include: acquiring multi-well data of a work area where a horizontal well is located; selecting a target layer, and selecting a reservoir logging parameter value corresponding to the target layer from multi-well data of a work area where a horizontal well is located; determining the size of a same-level interpolation grid according to the reservoir logging parameter value; determining an interpolation range according to multi-well data of a work area where a horizontal well is located; according to the size of the same-layer interpolation grid, the interpolation range and the selected target layer, interpolating multi-well data of a work area where a horizontal well is located, and determining a stratum three-dimensional attribute body; cutting the stratum three-dimensional attribute body to determine a three-dimensional stratum section; unfolding a three-dimensional stratum section along a well track, and determining a two-dimensional anisotropic stratum model; and adjusting the two-dimensional anisotropic formation model according to the logging response characteristics, and determining a horizontal well heterogeneous formation interpretation model.
When the method for constructing the horizontal well heterogeneous stratum interpretation model provided by the embodiment of the invention is implemented specifically, in an embodiment, the acquiring of the multi-well data of the work area where the horizontal well is located includes:
measuring the position relation between each adjacent well and the horizontal well through the three-dimensional distribution map, and selecting the wells with the distance to the horizontal well within a set threshold range;
and loading the logging data, the stratum data and the seismic layer data as the multi-well data of the work area where the horizontal well is located.
In an embodiment, to obtain multi-well data of a work area where a horizontal well is located, the method specifically includes: measuring the position relation between each adjacent well and the horizontal well through the three-dimensional distribution map, and selecting the wells with the distance to the horizontal well within a set threshold range; and loading the logging data, the stratum data and the seismic layer data as the multi-well data of the work area where the horizontal well is located.
Fig. 3 is a schematic diagram of horizontal well and multi-well data of a horizontal well heterogeneous stratum interpretation model construction method according to an embodiment of the present invention, and as shown in fig. 3, in order to select an interpolation object, multi-well data of a work area where the horizontal well is located needs to be obtained, a positional relationship between each adjacent well and the horizontal well is observed through a three-dimensional distribution map, and a well closer to the horizontal well is selected. And then loading logging data, stratum data and seismic layer data as multi-well data of a work area where the horizontal well is located, wherein the stratum data can be geological stratification data or stratification data after stratum comparison, and the selection of the stratum data is determined according to the characteristics of a target layer where the horizontal well is located. In this embodiment, 9 vertical wells and 1 horizontal well in the work area are selected, and the stratum is a geological layer, as shown in fig. 3. Well log data and formation data are the primary data acquired. The logging data mainly uses conventional measured data or reservoir parameter data, the formation data is subjected to different comparison divisions according to different interpretation tasks, and the granularity of the divided layers is related to interpretation objects, such as division according to reservoir distribution, division according to geological layers, division according to target layers and marker layers, and the like. After the logging data and the stratum data are obtained, seismic bedding surface data are loaded; the seismic layer data is the result data of seismic interpretation obtained by software or other seismic methods.
When the method for constructing the horizontal well heterogeneous stratum interpretation model provided by the embodiment of the invention is implemented specifically, in an embodiment, the selecting the target layer includes: and selecting the marker layer as a target layer according to the logging response characteristics.
When the method for constructing the horizontal well heterogeneous stratum interpretation model provided by the embodiment of the invention is implemented specifically, in an embodiment, the selecting the target layer further includes: and selecting a target layer according to the well drilling purpose.
In the embodiment, the selection of the destination layer mainly includes two aspects: one is to select the mark layer as the target layer according to the logging response characteristics, and the other is to select the target layer according to the well drilling purpose. For a horizontal well, the target layer is a definite layer or a plurality of layers according to the well drilling purpose, and in some cases, the mark layer is also used as the target layer for executing the method under the condition that the well logging response characteristics are obvious.
When the construction method of the horizontal well heterogeneous stratum interpretation model provided by the embodiment of the invention is specifically implemented, in one embodiment, after a target layer is selected, reservoir logging parameter values corresponding to the target layer are selected from multi-well data of a work area where the horizontal well is located, wherein the method for selecting the reservoir logging parameter values corresponding to the target layer comprises average value, half-width point method value, maximum value and the like.
When the method for constructing the horizontal well heterogeneous stratum interpretation model provided by the embodiment of the invention is implemented specifically, in an embodiment, the determining the size of the homoeotaxial interpolation grid according to the reservoir logging parameter value includes:
acquiring horizontal well data on the same horizon according to the reservoir logging parameter values, performing histogram analysis, and determining the reservoir anisotropic reservoir variation range;
and selecting the minimum distance of the anisotropic change from the variation range of the reservoir anisotropic reservoir as the size of the homomorphic interpolation grid.
In an embodiment, the same-level interpolation grid size depends on how fine the anisotropic modeling is. The method mainly comprises the following steps: acquiring horizontal well data on the same horizon according to the reservoir logging parameter values, performing histogram analysis, and determining the reservoir anisotropic reservoir variation range; and finding out the minimum distance in the variation range of the reservoir anisotropy reservoir by using the curve as the size of the same-level interpolation grid.
Fig. 4 is a histogram anisotropy difference comparison diagram of a horizontal well heterogeneous formation interpretation model construction method according to an embodiment of the present invention, where in a general target layer, if there is an anisotropy or heterogeneity in a formation, there is a case where numerical values are inconsistent in the same formation, for example, in an embodiment selected well, the magnitude of acoustic anisotropy is 8, as shown in fig. 4. Fig. 5 is a schematic diagram for judging the anisotropic difference scale of the horizontal well heterogeneous stratum interpretation model construction method according to the embodiment of the present invention, and when viewed from a curve, the variation range of the same stratum is about 100m, and the value is an approximate value, mainly the scale is consistent with the grid scale. As shown in fig. 5.
When the method for constructing the horizontal well heterogeneous stratum interpretation model provided by the embodiment of the invention is implemented specifically, in an embodiment, the determining the interpolation range according to the multi-well data of the work area where the horizontal well is located includes:
and acquiring the minimum coordinate and the maximum coordinate of each well as the interpolation range according to the multi-well data of the work area where the horizontal well is located.
In the embodiment, an interpolation range is determined according to multi-well data of a work area where a horizontal well is located, and the method mainly comprises the following steps:
and acquiring minimum coordinates (X, Y) and maximum coordinates (X, Y) of each well as an interpolation range according to multi-well data of a work area where the horizontal well is located.
When the method for constructing the horizontal well heterogeneous stratum interpretation model provided by the embodiment of the invention is specifically implemented, in one embodiment, the interpolation is performed on the multi-well data of the work area where the horizontal well is located according to the size of the same-level interpolation grid, the interpolation range and the selected target layer, so as to determine the stratum three-dimensional attribute body, and the method comprises the following steps:
performing layer-by-layer horizon interpolation on multi-well data of a work area where a horizontal well is located by utilizing an interpolation method according to the size of a same-horizon interpolation grid, an interpolation range and a selected target layer, and determining a stratum three-dimensional attribute body; wherein, during interpolation, when seismic horizon data is available, attributes within the seismic horizon are interpolated.
Fig. 6 is a schematic diagram of a formation three-dimensional attribute body formed by three-dimensional attribute interpolation of a horizontal well heterogeneous formation interpretation model construction method according to an embodiment of the present invention, and in the embodiment, in order to establish the formation three-dimensional attribute body, the main process includes: according to the size of the interpolation grid at the same layer position, the interpolation range and the selected target layer, performing layer-by-layer position interpolation on multi-well data of a work area where the horizontal well is located by utilizing interpolation methods such as kriging, minimum curvature radius and the like, and determining a stratum three-dimensional attribute body; wherein, during interpolation, when seismic horizon data is available, attributes in the seismic horizon are interpolated without performing horizon interpolation. Wherein, the interpolation comprises attribute interpolation and level interpolation; during interpolation, logging curves interpolated in multi-well data of a work area where the horizontal well is located are a natural gamma curve and a resistivity curve. In this embodiment, a kriging interpolation method is selected, the interpolation range is the maximum value and the minimum value of all wells, and a formation three-dimensional attribute body formed through interpolation is shown in fig. 6.
When the method for constructing the horizontal well heterogeneous stratum interpretation model provided by the embodiment of the invention is specifically implemented, in an embodiment, the segmenting the stratum three-dimensional attribute body and determining the three-dimensional stratum section comprises the following steps:
forming a curtain surface on the track of the horizontal well;
and (4) tangency of each section of the curtain surface with the stratum, and tangency of the slices with each grid of the three-dimensional attribute body of the stratum in sequence to form a three-dimensional stratum slice.
Fig. 7 is a schematic diagram of a well trajectory surface of a horizontal well heterogeneous stratum interpretation model construction method according to an embodiment of the present invention, in the embodiment, a three-dimensional stratum after interpolation is segmented along a horizontal well trajectory, and specifically, a horizontal well trajectory is first formed into a curtain surface, as shown in fig. 7. Fig. 8 is a schematic diagram of a three-dimensional stratigraphic slice of a horizontal well heterogeneous stratigraphic interpretation model construction method according to an embodiment of the present invention, after a window curtain surface is formed, each section of the window curtain surface is tangent to a stratigraphic layer, and the slice is sequentially tangent to each grid of a stratigraphic three-dimensional attribute body to form a three-dimensional stratigraphic slice, as shown in fig. 8.
Fig. 9 is a schematic stratigraphic section of a two-dimensional anisotropic stratigraphic model of a horizontal well heterogeneous stratigraphic interpretation model construction method according to an embodiment of the present invention. As shown in fig. 9, after the three-dimensional stratigraphic slice is formed, the three-dimensional stratigraphic section is expanded along the well trajectory to determine a two-dimensional anisotropic stratigraphic model; the abscissa is displacement and the ordinate is TVD depth. The unfolded two-dimensional anisotropic stratigraphic model is shown in fig. 9. When the construction method of the horizontal well heterogeneous stratum interpretation model provided by the embodiment of the invention is specifically implemented, in one embodiment, the two-dimensional anisotropic stratum model can be determined as follows:
wherein Offset is an Offset; x is the number ofi1、xi2Is the endpoint x coordinate of the current segment; y isi1、yi2The current endpoint segment y coordinate.
While the foregoing expressions for determining a two-dimensional anisotropic earth model are provided as examples, those skilled in the art will appreciate that the above equations may be modified in some manner and other parameters or data may be added or other specific equations may be provided as desired, and such modifications are intended to fall within the scope of the present invention.
Fig. 10 is a schematic diagram of a horizontal well heterogeneous stratum interpretation model output after adjustment of a horizontal well heterogeneous stratum interpretation model construction method according to an embodiment of the present invention, and as shown in fig. 10, when a horizontal well heterogeneous stratum interpretation model construction method provided by an embodiment of the present invention is specifically implemented, in an embodiment, the adjusting of the two-dimensional anisotropic stratum model according to the logging response characteristics to determine the horizontal well heterogeneous stratum interpretation model includes:
and adjusting the stratum interval position of the two-dimensional anisotropic stratum model according to the form of the actually measured curve in the logging response characteristic, and outputting the adjusted two-dimensional anisotropic stratum model as a horizontal well heterogeneous stratum interpretation model.
In the embodiment, the two-dimensional anisotropic formation model is adjusted according to the logging response characteristics to determine the horizontal well heterogeneous formation interpretation model, and the specific implementation may include:
and adjusting the stratum interval position of the two-dimensional anisotropic stratum model according to the form of the actually measured curve in the logging response characteristic, and outputting the adjusted two-dimensional anisotropic stratum model as a horizontal well heterogeneous stratum interpretation model. The adjusting of the interval position of the two-dimensional anisotropic formation model may include adding, deleting or modifying the interval position of the formation. Fig. 10 shows the adjusted output horizontal well heterogeneous stratum interpretation model for horizontal well interpretation.
Fig. 11 is a schematic diagram of a computer device for operating a horizontal well heterogeneous formation interpretation model construction method implemented by the present invention, and as shown in fig. 11, an embodiment of the present invention further provides a computer device, which includes a memory, a processor, and a computer program stored in the memory and operable on the processor, and when the processor executes the computer program, the horizontal well heterogeneous formation interpretation model construction method is implemented.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program for implementing the method for constructing a horizontal well heterogeneous formation interpretation model is stored in the computer-readable storage medium.
The embodiment of the invention also provides a device for constructing the horizontal well heterogeneous stratum interpretation model, which is described in the following embodiment. The principle of solving the problems of the device is similar to that of a horizontal well heterogeneous stratum interpretation model construction method, so the implementation of the device can refer to the implementation of the horizontal well heterogeneous stratum interpretation model construction method, and repeated parts are not repeated.
Fig. 12 is a schematic diagram of a horizontal well heterogeneous formation interpretation model construction device according to an embodiment of the present invention, and as shown in fig. 12, the embodiment of the present invention further provides a horizontal well heterogeneous formation interpretation model construction device, which may include:
the data acquisition module 1201 is used for acquiring multi-well data of a work area where a horizontal well is located;
the reservoir logging parameter value module 1202 is used for selecting a target layer and selecting a reservoir logging parameter value corresponding to the target layer from multi-well data of a work area where the horizontal well is located;
a same-level interpolation grid size determining module 1203, configured to determine a same-level interpolation grid size according to the reservoir logging parameter value;
an interpolation range determining module 1204, configured to determine an interpolation range according to multi-well data of a work area where the horizontal well is located;
the stratum three-dimensional attribute body determining module 1205 is configured to interpolate the multi-well data of the work area where the horizontal well is located according to the size of the same-level interpolation grid, the interpolation range and the selected target layer, and determine a stratum three-dimensional attribute body;
the three-dimensional stratum section determining module 1206 is used for segmenting the stratum three-dimensional attribute body and determining a three-dimensional stratum section;
a two-dimensional anisotropic formation model determining module 1207, configured to expand the three-dimensional formation section along the well trajectory, and determine a two-dimensional anisotropic formation model;
and the horizontal well heterogeneous stratum interpretation model determining module 1208 is used for adjusting the two-dimensional anisotropic stratum model according to the logging response characteristics to determine the horizontal well heterogeneous stratum interpretation model.
When the device for constructing the horizontal well heterogeneous stratum interpretation model provided by the embodiment of the invention is implemented specifically, in an embodiment, the data acquisition module is specifically configured to:
measuring the position relation between each adjacent well and the horizontal well through the three-dimensional distribution map, and selecting the wells with the distance to the horizontal well within a set threshold range;
and loading the logging data, the stratum data and the seismic layer data as the multi-well data of the work area where the horizontal well is located.
When the device for constructing the horizontal well heterogeneous stratum interpretation model provided by the embodiment of the invention is implemented specifically, in an embodiment, the reservoir logging parameter value module is specifically configured to: and selecting the marker layer as a target layer according to the logging response characteristics.
In a specific implementation of the device for constructing the horizontal well heterogeneous formation interpretation model according to the embodiment of the present invention, in an embodiment, the reservoir logging parameter value module is further configured to: and selecting a target layer according to the well drilling purpose.
When the device for constructing the horizontal well heterogeneous stratigraphic interpretation model provided by the embodiment of the invention is specifically implemented, in one embodiment, the module for determining the size of the homoeographic interpolation grid is specifically used for:
acquiring horizontal well data on the same horizon according to the reservoir logging parameter values, performing histogram analysis, and determining the reservoir anisotropic reservoir variation range;
and selecting the minimum distance of the anisotropic change from the variation range of the reservoir anisotropic reservoir as the size of the homomorphic interpolation grid.
When the device for constructing the horizontal well heterogeneous stratum interpretation model provided by the embodiment of the present invention is implemented specifically, in an embodiment, the interpolation range determining module is specifically configured to:
and acquiring the minimum coordinate and the maximum coordinate of each well as an interpolation range according to the multi-well data of the work area where the horizontal well is located.
When the device for constructing the horizontal well heterogeneous stratum interpretation model provided by the embodiment of the invention is implemented specifically, in an embodiment, the stratum three-dimensional attribute body determining module is specifically configured to:
performing layer-by-layer horizon interpolation on multi-well data of a work area where a horizontal well is located by utilizing an interpolation method according to the size of a same-horizon interpolation grid, an interpolation range and a selected target layer, and determining a stratum three-dimensional attribute body; wherein, during interpolation, when seismic horizon data is available, attributes within the seismic horizon are interpolated.
When the device for constructing the horizontal well heterogeneous stratum interpretation model provided by the embodiment of the invention is implemented specifically, in an embodiment, the three-dimensional stratum section determining module is specifically configured to:
forming a curtain surface on the track of the horizontal well;
and (4) tangency of each section of the curtain surface with the stratum, and tangency of the slices with each grid of the three-dimensional attribute body of the stratum in sequence to form a three-dimensional stratum slice.
In a specific implementation of the device for constructing a horizontal well heterogeneous formation interpretation model according to the embodiment of the present invention, in an embodiment, the two-dimensional anisotropic formation model determining module is specifically configured to determine the two-dimensional anisotropic formation model according to the following manner:
wherein Offset is an Offset; x is the number ofi1、xi2Is the endpoint x coordinate of the current segment; y isi1、yi2The current endpoint segment y coordinate.
When the device for constructing the horizontal well heterogeneous stratum interpretation model provided by the embodiment of the invention is implemented specifically, in an embodiment, the horizontal well heterogeneous stratum interpretation model determining module is specifically configured to:
and adjusting the stratum interval position of the two-dimensional anisotropic stratum model according to the form of the actually measured curve in the logging response characteristic, and outputting the adjusted two-dimensional anisotropic stratum model as a horizontal well heterogeneous stratum interpretation model.
To sum up, the method and the device for constructing the horizontal well heterogeneous stratum interpretation model provided by the embodiment of the invention comprise the following steps: firstly, acquiring multi-well data of a work area where a horizontal well is located; selecting a target layer, and selecting a reservoir logging parameter value corresponding to the target layer from multi-well data of a work area where the horizontal well is located; then, determining the size of a same-level interpolation grid according to the reservoir logging parameter value; determining an interpolation range according to the multi-well data of the work area where the horizontal well is located; next, interpolating multi-well data of a work area where the horizontal well is located according to the size of the same-layer interpolation grid, the interpolation range and the selected target layer, and determining a stratum three-dimensional attribute body; then, next, segmenting the stratum three-dimensional attribute body to determine a three-dimensional stratum section; then, expanding the three-dimensional stratum section along the well track to determine a two-dimensional anisotropic stratum model; and finally, adjusting the two-dimensional anisotropic formation model according to the logging response characteristics, and determining the horizontal well heterogeneous formation interpretation model. The embodiment of the invention provides a construction method of a horizontal well heterogeneous stratum interpretation model aiming at a heterogeneous stratum, which is characterized in that a heterogeneous stratum model is constructed by utilizing information such as multi-well curve data, stratum contrast and the like in a work area through spatial three-dimensional interpolation, so that the interpretation model is more in line with actual geological conditions; by utilizing the embodiment of the invention, a heterogeneous stratum model can be constructed in a clastic rock stratum and a shale reservoir according to the response characteristic difference of the curves based on the multi-well data, the stratum data and the like of the adjacent wells, and the construction and interpretation precision of the horizontal well stratum model is improved.
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 flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations 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 (22)
1. A construction method of a horizontal well heterogeneous stratum interpretation model is characterized by comprising the following steps:
acquiring multi-well data of a work area where a horizontal well is located;
selecting a target layer, and selecting a reservoir logging parameter value corresponding to the target layer from multi-well data of a work area where a horizontal well is located;
determining the size of a same-level interpolation grid according to the reservoir logging parameter value;
determining an interpolation range according to multi-well data of a work area where a horizontal well is located;
according to the size of the same-layer interpolation grid, the interpolation range and the selected target layer, interpolating multi-well data of a work area where a horizontal well is located, and determining a stratum three-dimensional attribute body;
cutting the stratum three-dimensional attribute body to determine a three-dimensional stratum section;
unfolding a three-dimensional stratum section along a well track, and determining a two-dimensional anisotropic stratum model;
and adjusting the two-dimensional anisotropic formation model according to the logging response characteristics, and determining a horizontal well heterogeneous formation interpretation model.
2. The method of claim 1, wherein acquiring multi-well data for a work area in which the horizontal well is located comprises:
measuring the position relation between each adjacent well and the horizontal well through the three-dimensional distribution map, and selecting the wells with the distance to the horizontal well within a set threshold range;
and loading the logging data, the stratum data and the seismic layer data as the multi-well data of the work area where the horizontal well is located.
3. The method of claim 1, wherein selecting the destination layer comprises: and selecting the marker layer as a target layer according to the logging response characteristics.
4. The method of claim 3, wherein selecting the destination layer further comprises: and selecting a target layer according to the well drilling purpose.
5. The method of claim 1, wherein determining a homonymous interpolation grid size based on reservoir logging parameter values comprises:
acquiring horizontal well data on the same horizon according to the reservoir logging parameter values, performing histogram analysis, and determining the reservoir anisotropic reservoir variation range;
and selecting the minimum distance of the anisotropic change from the anisotropic reservoir change range of the reservoir as the same-level interpolation grid size.
6. The method of claim 1, wherein determining an interpolation range from multi-well data for a work area in which a horizontal well is located comprises:
and acquiring the minimum coordinate and the maximum coordinate of each well as an interpolation range according to the multi-well data of the work area where the horizontal well is located.
7. The method of claim 1, wherein the step of interpolating the multi-well data of the work area where the horizontal well is located according to the size of the same-horizon interpolation grid, the interpolation range and the selected target horizon to determine the stratum three-dimensional attribute body comprises the following steps:
performing layer-by-layer horizon interpolation on multi-well data of a work area where a horizontal well is located by utilizing an interpolation method according to the size of a same-horizon interpolation grid, an interpolation range and a selected target layer, and determining a stratum three-dimensional attribute body; wherein, during interpolation, when seismic horizon data is available, attributes within the seismic horizon are interpolated.
8. The method of claim 1, wherein segmenting the three-dimensional attribute body of the formation to determine a three-dimensional formation cut comprises:
forming a curtain surface on the track of the horizontal well;
and (4) tangency of each section of the curtain surface with the stratum, and tangency of the slices with each grid of the three-dimensional attribute body of the stratum in sequence to form a three-dimensional stratum slice.
9. The method of claim 1, wherein the two-dimensional anisotropic formation model is determined as follows:
wherein Offset is an Offset; x is the number ofi1、xi2Is the endpoint x coordinate of the current segment; y isi1、yi2The current endpoint segment y coordinate.
10. The method of claim 1, wherein adjusting the two-dimensional anisotropic formation model according to the log response characteristics to determine a horizontal well heterogeneous formation interpretation model comprises:
and adjusting the stratum interval position of the two-dimensional anisotropic stratum model according to the form of the actually measured curve in the logging response characteristic, and outputting the adjusted two-dimensional anisotropic stratum model as a horizontal well heterogeneous stratum interpretation model.
11. A horizontal well heterogeneous stratum interpretation model construction device is characterized by comprising the following steps:
the data acquisition module is used for acquiring multi-well data of a work area where the horizontal well is located;
the reservoir logging parameter value module is used for selecting a target layer and selecting a reservoir logging parameter value corresponding to the target layer from multi-well data of a work area where the horizontal well is located;
the same-level interpolation grid size determining module is used for determining the size of the same-level interpolation grid according to the reservoir logging parameter value;
the interpolation range determining module is used for determining an interpolation range according to multi-well data of a work area where the horizontal well is located;
the stratum three-dimensional attribute body determining module is used for interpolating multi-well data of a work area where the horizontal well is located according to the size of the same-layer interpolation grid, the interpolation range and the selected target layer to determine a stratum three-dimensional attribute body;
the three-dimensional stratum section determining module is used for segmenting the stratum three-dimensional attribute body and determining a three-dimensional stratum section;
the two-dimensional anisotropic stratum model determining module is used for unfolding a three-dimensional stratum section along a well track and determining a two-dimensional anisotropic stratum model;
and the horizontal well heterogeneous stratum interpretation model determining module is used for adjusting the two-dimensional anisotropic stratum model according to the logging response characteristics and determining the horizontal well heterogeneous stratum interpretation model.
12. The apparatus of claim 11, wherein the data acquisition module is specifically configured to:
measuring the position relation between each adjacent well and the horizontal well through the three-dimensional distribution map, and selecting the wells with the distance to the horizontal well within a set threshold range;
and loading the logging data, the stratum data and the seismic layer data as the multi-well data of the work area where the horizontal well is located.
13. The apparatus of claim 11, wherein the reservoir logging parameter value module is specifically configured to: and selecting the marker layer as a target layer according to the logging response characteristics.
14. The apparatus of claim 13, wherein the reservoir logging parameter value module is further configured to: and selecting a target layer according to the well drilling purpose.
15. The apparatus of claim 11, wherein the homonym interpolation grid size determination module is specifically configured to:
acquiring horizontal well data on the same horizon according to the reservoir logging parameter values, performing histogram analysis, and determining the reservoir anisotropic reservoir variation range;
and selecting the minimum distance of the anisotropic change from the variation range of the reservoir anisotropic reservoir as the size of the homomorphic interpolation grid.
16. The apparatus of claim 11, wherein the interpolation range determination module is specifically configured to:
and acquiring the minimum coordinate and the maximum coordinate of each well as an interpolation range according to the multi-well data of the work area where the horizontal well is located.
17. The apparatus of claim 11, wherein the formation three-dimensional attribute body determination module is specifically to:
performing layer-by-layer horizon interpolation on multi-well data of a work area where a horizontal well is located by utilizing an interpolation method according to the size of a same-horizon interpolation grid, an interpolation range and a selected target layer, and determining a stratum three-dimensional attribute body; wherein, during interpolation, when seismic horizon data is available, attributes within the seismic horizon are interpolated.
18. The apparatus of claim 11, wherein the three-dimensional stratigraphic section determination module is specifically configured to:
forming a curtain surface on the track of the horizontal well;
and (4) tangency of each section of the curtain surface with the stratum, and tangency of the slices with each grid of the three-dimensional attribute body of the stratum in sequence to form a three-dimensional stratum slice.
19. The apparatus of claim 11, wherein the two-dimensional anisotropic formation model determining module is specifically configured to determine the two-dimensional anisotropic formation model as follows:
wherein Offset is an Offset; x is the number ofi1、xi2Is the endpoint x coordinate of the current segment; y isi1、yi2The current endpoint segment y coordinate.
20. The apparatus of claim 11, wherein the horizontal well heterogeneous formation interpretation model determination module is specifically configured to:
and adjusting the stratum interval position of the two-dimensional anisotropic stratum model according to the form of the actually measured curve in the logging response characteristic, and outputting the adjusted two-dimensional anisotropic stratum model as a horizontal well heterogeneous stratum interpretation model.
21. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the method of any of claims 1 to 10 when executing the computer program.
22. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program for executing a method according to any one of claims 1 to 10.
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