CN110673214B - Method and device for predicting depths of inlet target point and end point of horizontal well - Google Patents
Method and device for predicting depths of inlet target point and end point of horizontal well Download PDFInfo
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Abstract
The application discloses a method and a device for predicting depths of an inlet target point and a tail end point of a horizontal well, and belongs to the technical field of oil and gas exploitation. The method comprises the following steps: marking a drilled inlet target point and a vertical projection point in the time domain seismic section diagram, marking an inlet target point and a terminal point of a horizontal well, marking a drilled inlet target point and a vertical projection point in the depth domain oil reservoir section diagram, performing telescopic processing on the time domain seismic section diagram, respectively overlapping the drilled inlet target point and the vertical projection point in the time domain seismic section diagram and the depth domain seismic section diagram, and determining the depth values of the depth domain oil reservoir section diagram corresponding to the inlet target point and the terminal point of the horizontal well. According to the method and the device, the time domain seismic profile and the depth domain oil reservoir profile are compared and analyzed, the depth value in the depth domain seismic profile is accurate, the depth error of the inlet target point and the tail end point of the horizontal well is reduced, and the accuracy of predicting the depth of the inlet target point and the tail end point of the horizontal well is improved.
Description
Technical Field
The application relates to the technical field of oil and gas exploitation, in particular to a method and a device for predicting depths of an inlet target point and a tail end point of a horizontal well.
Background
In oil and gas field development, before a horizontal well is drilled, a borehole trajectory of the horizontal well needs to be designed, and the depths of a starting point (also called an inlet target point) and an end point (also called an end point) of the borehole trajectory need to be predicted. The horizontal well comprises a vertical section and a horizontal section, wherein the horizontal section is a part of an oil well in an oil reservoir, and the well track is a track of the horizontal well in the oil reservoir, namely a track of the horizontal section.
The method for predicting the depths of the inlet target point and the end point of the horizontal well in the related technology comprises the following steps: and (4) making synthetic seismic records for the peripheral region of the drilled well nearest to the horizontal well to obtain seismic interpretation data of the region. And constructing a time domain seismic profile of the region according to the seismic interpretation data, marking an inlet target point of the horizontal well in the time domain seismic profile according to a pre-designed well position (which can be represented by a central axis of a vertical section of the horizontal well), for example, determining an intersection point of the central axis of the vertical section and an oil reservoir top boundary as the inlet target point. And marking the end point of the horizontal well in the time domain seismic section diagram by utilizing the pre-designed extension direction and extension distance. And reading time values of the time domain seismic section diagrams corresponding to the entrance target point and the end point, and converting the time values to obtain depth values of the entrance target point and the end point by utilizing a time-depth relation in seismic interpretation data.
In the process of implementing the present application, the inventor finds that the prior art has at least the following problems:
for the area with large stratum structure fluctuation, the time-depth relation in the seismic interpretation data is not accurate enough, so that the depth error of the horizontal well inlet target point and the tail end point predicted by adopting the method in the related technology is large, and further, the subsequently designed well track is inaccurate.
Disclosure of Invention
The embodiment of the application provides a method and a device for predicting the depths of an inlet target point and a tail end point of a horizontal well, and the problems in the related art can be solved. The technical scheme is as follows:
in one aspect, a method of predicting depths of an entry target point and an end point of a horizontal well is provided, the method comprising:
constructing a time domain seismic profile of a target region based on seismic interpretation data of the target region, and marking a drilled entry target point and a vertical projection point of the entry target point at the bottom boundary of a target oil reservoir in the time domain seismic profile, wherein the drilled entry target point and the target oil reservoir are positioned in the target region;
marking an inlet target point and a tail end point of the horizontal well in the time domain seismic profile based on a pre-designed well position of the horizontal well;
constructing a depth domain reservoir profile of the target reservoir based on the depth measurement value of the target reservoir, and marking the drilled entry target point and a vertical projection point of the entry target point on the bottom boundary of the target reservoir in the depth domain reservoir profile;
performing telescopic processing on the time domain seismic profile, and respectively overlapping the drilled inlet target point and the vertical projection point in the time domain seismic profile with the drilled inlet target point and the drilled vertical projection point in the depth domain seismic profile;
and determining the depth values of the inlet target point and the end point of the horizontal well corresponding to the depth domain oil reservoir profile map as the depths of the inlet target point and the end point of the horizontal well.
Optionally, the marking a drilled entry target point in the time domain seismic profile comprises:
calculating to obtain a time value corresponding to the depth measurement value based on the depth measurement value of the drilled inlet target point and the time-depth relation in the seismic interpretation data;
marking the drilled entry target point in the time domain seismic profile based on the time value and the drilled well position.
Optionally, the marking the drilled entry target point in the depth domain reservoir profile comprises:
marking the drilled entry target in the depth domain reservoir profile based on the depth measurements of the drilled entry target and the drilled well location.
Optionally, after determining the depth values of the entry target point and the end point of the horizontal well corresponding to the depth domain reservoir profile, as the depths of the entry target point and the end point of the horizontal well, the method further includes:
and determining target positions of the inlet target point and the tail end point of the horizontal well based on the depth values of the inlet target point and the tail end point of the horizontal well and pre-designed longitude and latitude coordinates corresponding to the inlet target point and the tail end point of the horizontal well.
Optionally, after determining the target positions of the inlet target point and the end point of the horizontal well, the method further includes:
and determining the stratum inclination angle of the borehole trajectory of the horizontal well based on the target positions of the inlet target point and the end point of the horizontal well.
In another aspect, there is provided an apparatus for predicting depths of an entry target point and an end point of a horizontal well, the apparatus comprising:
the system comprises a first construction module, a second construction module and a third construction module, wherein the first construction module is used for constructing a time domain seismic profile of a target region based on seismic interpretation data of the target region, and marking a drilled entry target point and a vertical projection point of the entry target point at the bottom boundary of a target oil reservoir in the time domain seismic profile, wherein the drilled entry target point and the target oil reservoir are positioned in the target region;
the marking module is used for marking an entrance target point and a tail end point of the horizontal well in the time domain seismic profile based on the pre-designed well position of the horizontal well;
the second construction module is used for constructing a depth domain reservoir profile of the target reservoir based on the depth measurement value of the target reservoir, and marking the well-drilled inlet target point and a vertical projection point of the inlet target point on the bottom boundary of the target reservoir in the depth domain reservoir profile;
the processing module is used for performing telescopic processing on the time domain seismic profile and respectively superposing the drilled inlet target point and the vertical projection point in the time domain seismic profile and the drilled inlet target point and the vertical projection point in the depth domain seismic profile;
and the determining module is used for determining the depth values of the inlet target point and the end point of the horizontal well, which correspond to the depth domain oil reservoir profile map, and taking the depth values as the depths of the inlet target point and the end point of the horizontal well.
Optionally, the first building module is further configured to:
calculating to obtain a time value corresponding to the depth measurement value based on the depth measurement value of the drilled inlet target point and the time-depth relation in the seismic interpretation data;
marking the drilled entry target point in the time domain seismic profile based on the time value and the drilled well position.
Optionally, the second building module is further configured to:
marking the drilled entry target in the depth domain reservoir profile based on the depth measurements of the drilled entry target and the drilled well location.
Optionally, the determining module is configured to:
and determining target positions of the inlet target point and the tail end point of the horizontal well based on the depth values of the inlet target point and the tail end point of the horizontal well and pre-designed longitude and latitude coordinates corresponding to the inlet target point and the tail end point of the horizontal well.
Optionally, the determining module is further configured to:
and determining the stratum inclination angle of the borehole trajectory of the horizontal well based on the target positions of the inlet target point and the end point of the horizontal well.
In yet another aspect, a terminal is provided, which includes a processor and a memory, where the memory stores at least one instruction, and the at least one instruction is loaded and executed by the processor to implement the above method for predicting depths of an entry target point and an end point of a horizontal well.
In yet another aspect, a computer-readable storage medium is provided, wherein at least one instruction is stored in the computer-readable storage medium, and the at least one instruction is loaded and executed by a processor to implement the above method for determining depths of an entry target point and an end point of a predicted horizontal well.
The technical scheme provided by the embodiment of the application has the following beneficial effects:
according to the method for predicting the depths of the inlet target point and the end point of the horizontal well, a depth domain oil deposit profile map of a target oil deposit is constructed based on the actual depth measurement value of the target oil deposit. And finally, taking the depth values of the depth domain oil reservoir profile corresponding to the inlet target point and the tail end point of the horizontal well as the depths of the inlet target point and the tail end point of the horizontal well. According to the method provided by the embodiment of the application, the time domain seismic profile and the depth domain oil reservoir profile are compared and analyzed, and the depth values in the depth domain seismic profile are accurate, so that the method provided by the embodiment of the application reduces the depth error of the inlet target point and the tail end point of the horizontal well, improves the accuracy of predicting the depth of the inlet target point and the tail end point of the horizontal well, and further improves the accuracy of subsequently designed well tracks.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a flowchart of a method for predicting depths of an entry target point and an end point of a horizontal well according to an embodiment of the present disclosure;
fig. 2 is a flowchart of a method for predicting depths of an entry target point and an end point of a horizontal well according to an embodiment of the present disclosure;
FIG. 3 is a schematic structural diagram of an apparatus for predicting depths of an entry target point and an end point of a horizontal well according to an embodiment of the present disclosure;
fig. 4 is a block diagram of a terminal according to an embodiment of the present disclosure;
FIG. 5 is a graphical illustration of a synthetic seismic record calibrated depth versus velocity according to an embodiment of the present disclosure;
FIG. 6 is a seismic profile of a calibrated horizontal well and a drilled time domain provided by an embodiment of the present application;
FIG. 7 is a cross-sectional view of a reservoir in a calibrated horizontal well and a drilled depth zone provided by an embodiment of the present application;
FIG. 8 is a schematic illustration of a time domain seismic profile and a depth domain reservoir profile coincident with one another as provided by an embodiment of the present application;
FIG. 9 is a schematic diagram of a method for determining a formation dip angle of a borehole trajectory of a horizontal well according to an embodiment of the present disclosure.
Detailed Description
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
The embodiment of the application provides a method for predicting the depths of an inlet target point and a tail end point of a horizontal well, and the method can be realized by a terminal. The terminal can be a mobile terminal such as a mobile phone, a tablet computer and a notebook computer, and can also be a fixed terminal such as a desktop computer.
The method provided by the embodiment of the application can be applied to the technical field of oil and gas exploitation, and is specifically used for determining the depths of the inlet target point and the tail end point of the horizontal well. When a technician wants to determine the depths of an inlet target point and a tail end point of the horizontal well, the well position of the horizontal well, namely the central axis of the vertical section of the horizontal well, can be designed in advance, and the extension direction and the extension length of the horizontal well can be designed in advance. Then, the method provided by the embodiment of the application can be used for obtaining the entrance target point and the end point of the horizontal well according to the pre-designed well position and other marks on the time domain seismic profile and the depth domain reservoir profile, and determining the depth values of the depth domain reservoir profile corresponding to the entrance target point and the end point of the horizontal well in the time domain seismic profile as the depths of the entrance target point and the end point of the horizontal well. Finally, technicians can obtain the depths of the inlet target point and the end point of the horizontal well and design a well track according to the depths, so that drilling is carried out.
Fig. 1 is a flowchart of a method for predicting depths of an entry target point and an end point of a horizontal well according to an embodiment of the present disclosure. Referring to fig. 1, the embodiment includes:
in step 101, a time domain seismic profile of the target region is constructed based on seismic interpretation data of the target region, and a drilled entry target point and a vertical projection point of the entry target point at the bottom boundary of the target oil reservoir are marked in the time domain seismic profile, wherein the drilled entry target point and the target oil reservoir are located in the target region.
In step 102, an entry target point and a terminal point of the horizontal well are marked in the time domain seismic profile based on the pre-planned well position of the horizontal well.
In step 103, a depth domain reservoir profile of the target reservoir is constructed based on the depth measurement value of the target reservoir, and the well-drilled entry target point and the vertical projection point of the entry target point on the bottom boundary of the target reservoir are marked in the depth domain reservoir profile.
In step 104, the time domain seismic profile is subjected to scaling processing, and the drilled entry target point and the vertical projection point in the time domain seismic profile are respectively overlapped with the drilled entry target point and the drilled vertical projection point in the depth domain seismic profile.
In step 105, the depth values of the reservoir profile of the depth domain corresponding to the entrance target point and the end point of the horizontal well are determined and used as the depths of the entrance target point and the end point of the horizontal well.
The technical scheme provided by the embodiment of the application has the following beneficial effects:
according to the method for predicting the depths of the inlet target point and the end point of the horizontal well, a depth domain oil deposit profile map of a target oil deposit is constructed based on the actual depth measurement value of the target oil deposit. And finally, taking the depth values of the depth domain oil reservoir profile corresponding to the inlet target point and the tail end point of the horizontal well as the depths of the inlet target point and the tail end point of the horizontal well. According to the method provided by the embodiment of the application, the time domain seismic profile and the depth domain oil reservoir profile are compared and analyzed, and the depth values in the depth domain seismic profile are accurate, so that the method provided by the embodiment of the application reduces the depth error of the inlet target point and the tail end point of the horizontal well, improves the accuracy of predicting the depth of the inlet target point and the tail end point of the horizontal well, and further improves the accuracy of subsequently designed well tracks.
Fig. 2 is a flowchart of a method for predicting depths of an entry target point and an end point of a horizontal well according to an embodiment of the present disclosure. Referring to fig. 2, the embodiment includes:
in step 201, a time domain seismic profile of the target zone is constructed based on the seismic interpretation data of the target zone.
The target zone is a drilled peripheral zone closest to the horizontal well. Drilled is the closest horizontal well to the horizontal well. The seismic interpretation data are data obtained by synthesizing seismic records by acoustic logging. A time domain seismic profile is a profile that reflects the subsurface geologic formation.
In the implementation, synthetic seismic records are made for the peripheral region of the drilled well nearest to the horizontal well, and seismic interpretation data of the region are obtained. And constructing a time domain seismic profile of the region according to the seismic interpretation data, wherein the time domain seismic profile is clear in an oil reservoir interface, the abscissa of the time domain seismic profile is that all the recording tracks are sequentially arranged according to the plane position of the reflection point and used for representing the position, and the ordinate is the seismic wave reflection time.
In step 202, the well-drilled entry target point and the vertical projection point of the entry target point at the bottom boundary of the target reservoir are marked in the time domain seismic profile.
The drilled well and the target oil deposit are located in the target region, and the entrance target point refers to the starting point of the well track when the horizontal well drills to the oil deposit. The target oil reservoir refers to an oil reservoir when a horizontal well is drilled.
In implementation, the time-depth relationship of the target region can be obtained according to the seismic interpretation data, and the time value corresponding to the depth measurement value can be obtained through calculation based on the depth measurement value of the drilled entry target point and the time-depth relationship in the seismic interpretation data. And marking the drilled entry target point in the time domain seismic profile based on the time value and the drilled well position, making a vertical line and the bottom boundary of the target oil reservoir to obtain an intersection point, and taking the intersection point as a vertical projection point of the entry target point on the bottom boundary of the target oil reservoir. Wherein the time-depth relationship is the relationship between the reservoir depth and the seismic wave velocity in the target region. The drilled well location may be the central axis of the drilled vertical section.
Optionally, the depth measurement of the entry target point is converted into a time value of the entry target point according to the depth measurement of the entry target point which is drilled, the time-depth relation and D ═ v × t, and the entry target point which is drilled is marked in the time domain seismic profile according to the time value and the well position which is drilled, wherein: d is depth, m; v is the velocity, m/s; t is the time value, s.
For example, fig. 5 is a schematic diagram of a synthetic seismic record calibrated depth versus velocity relationship provided by an embodiment of the present application. As shown in FIG. 5, the abscissa represents velocity in m/s and the ordinate represents depth in m. When the depth value corresponding to the drilled entry target point is 1500m, the speed corresponding to the depth value is 2400m/s according to fig. 5, and the time value corresponding to the entry target point is 0.625s by using the above formula. When the depth value corresponding to the vertical projection point of the drilled inlet target point at the bottom boundary of the target oil reservoir is 2000m, the speed corresponding to the depth value is 2800m/s according to fig. 5, and the time value corresponding to the vertical projection point is 0.714s by using the above formula.
In step 203, an entry target point and a terminal point of the horizontal well are marked in the time domain seismic profile based on the pre-planned well position of the horizontal well.
The well position of the horizontal well can be the central axis of the vertical section of the horizontal well. The end point refers to the end point of the wellbore trajectory when the horizontal well is drilled into the reservoir.
In implementation, according to a pre-designed well position of the horizontal well, an intersection point of a central axis of the vertical section and an oil reservoir top boundary is determined as an inlet target point. And marking the tail end point of the horizontal well in the time domain seismic section according to the inlet target point, the pre-designed extension direction and the pre-designed extension distance of the horizontal well.
Optionally, according to the drilled entry target point and the distance between the horizontal well and the drilled well, the entry target point of the horizontal well can be determined, and the entry target point of the horizontal well is marked in the time domain seismic profile.
For example, when drilling, a horizontal well can be drilled every 50 meters in advance, namely, the distance between the horizontal well and the drilled well is 50 meters, and after determining the entry target point of the drilled well, the 50 meters are proportionally mapped to the time domain seismic profile, so that the entry target point of the horizontal well is determined.
Fig. 6 is a time domain seismic profile of a calibrated horizontal well and a drilled well according to an embodiment of the present application, as shown in fig. 6, where the abscissa of the time domain seismic profile in fig. 6 represents position and the ordinate represents time in ms. FIG. 6 contains a target reservoir time value curve, a drilled entry target point, a vertical projection point of the drilled entry target point at the bottom boundary of the target reservoir, and an entry target point of a horizontal well.
In step 204, a depth domain reservoir profile of the target reservoir is constructed based on the depth measurement value of the target reservoir, and an entry target of the drilled well is marked in the depth domain reservoir profile, and a vertical projection point of the entry target at the bottom boundary of the target reservoir is marked.
The depth domain oil reservoir profile is a morphological graph of oil reservoir fluctuation in the longitudinal direction, and the horizontal proportion of the depth domain oil reservoir profile is consistent with that of the time domain seismic profile.
In implementation, a depth domain reservoir profile of the target reservoir may be constructed using mapping software based on the depth measurements of the target reservoir. Marking the drilled entry target point in a depth domain oil reservoir profile map based on the depth measurement value of the drilled entry target point and the drilled well position, making a vertical line and the bottom boundary of the target oil reservoir to obtain an intersection point, and taking the intersection point as a vertical projection point of the entry target point on the bottom boundary of the target oil reservoir.
Fig. 7 is a cross-sectional view of a calibrated horizontal well and a drilled depth-domain reservoir according to an embodiment of the present disclosure, where, as shown in fig. 7, the abscissa of the cross-sectional view of the depth-domain reservoir in fig. 7 represents position and the ordinate represents depth, and the unit is m. FIG. 7 contains a target reservoir depth value curve, the drilled entry target, and the vertical projection of the drilled entry target at the bottom boundary of the target reservoir.
And step 205, performing stretching processing on the time domain seismic section map, and respectively overlapping the drilled inlet target point and the vertical projection point in the time domain seismic section map with the drilled inlet target point and the drilled vertical projection point in the depth domain seismic section map.
In implementation, the time domain seismic profile and the depth domain seismic profile are overlapped, the time domain seismic profile is longitudinally stretched, and the drilled entry target point and the vertical projection point in the time domain seismic profile are respectively overlapped with the drilled entry target point and the vertical projection point in the depth domain seismic profile.
For example, fig. 8 is a schematic diagram of a time-domain seismic profile and a depth-domain reservoir profile, which are overlapped, as shown in fig. 8, in which fig. 8 illustrates that the time-domain seismic profile corresponding to fig. 6 and the depth-domain seismic profile corresponding to fig. 7 overlap a drilled entry target point and a vertical projection point, respectively, and the entry target point of a horizontal well in the time-domain seismic profile is stretched, so that the depth value of the entry target point of the horizontal well is closer to the actual depth.
And step 206, determining the depth values of the oil reservoir profile of the depth domain corresponding to the entrance target point and the end point of the horizontal well as the depths of the entrance target point and the end point of the horizontal well.
In implementation, after the drilled entry target point and the vertical projection point in the time domain seismic section map are respectively overlapped with the drilled entry target point and the vertical projection point in the depth domain seismic section map, the depth values of the depth domain reservoir section map corresponding to the entry target point and the end point in the time domain seismic section map are read, and the depth values are used as the depths of the entry target point and the end point of the horizontal well.
For example, as shown in fig. 8, the entry target point of the horizontal well in the time domain seismic profile is stretched to correspond to the depth domain reservoir profile with a depth value of 1811.5 m. The above-mentioned fig. 6, fig. 7 and fig. 8 are described by taking the depth of the depth domain oil reservoir profile corresponding to the entry target point of the horizontal well as an example, and the method of predicting the depth of the depth domain oil reservoir profile corresponding to the end point of the horizontal well is consistent with the method of predicting the depth of the depth domain oil reservoir profile corresponding to the entry target point of the horizontal well, and therefore, the details are not repeated.
Optionally, the target positions of the inlet target point and the end point of the horizontal well are determined based on the depth values of the inlet target point and the end point of the horizontal well and pre-designed longitude and latitude coordinates corresponding to the inlet target point and the end point of the horizontal well.
Optionally, the formation dip angle of the borehole trajectory of the horizontal well is determined based on the target positions of the entry target point and the end point of the horizontal well.
Fig. 9 is a schematic diagram of a method for determining a formation dip angle of a borehole trajectory of a horizontal well according to an embodiment of the present application, and as shown in fig. 9, the formation dip angle of the borehole trajectory of the horizontal well may be determined according to longitude and latitude coordinates, a depth value, and tan θ ═ Dy/Dx corresponding to an entry target point and an end point of the horizontal well. Wherein theta refers to the stratum inclination angle of the borehole trajectory of the horizontal well, Dy refers to the distance between the inlet target point of the horizontal well and the vertical projection point, and Dx refers to the distance between the tail end point of the horizontal well and the vertical projection point.
The technical scheme provided by the embodiment of the application has the following beneficial effects:
according to the method for predicting the depths of the inlet target point and the end point of the horizontal well, a depth domain oil deposit profile map of a target oil deposit is constructed based on the actual depth measurement value of the target oil deposit. And finally, taking the depth values of the depth domain oil reservoir profile corresponding to the inlet target point and the tail end point of the horizontal well as the depths of the inlet target point and the tail end point of the horizontal well. According to the method provided by the embodiment of the application, the time domain seismic profile and the depth domain oil reservoir profile are compared and analyzed, and the depth values in the depth domain seismic profile are accurate, so that the method provided by the embodiment of the application reduces the depth error of the inlet target point and the tail end point of the horizontal well, improves the accuracy of predicting the depth of the inlet target point and the tail end point of the horizontal well, and further improves the accuracy of subsequently designed well tracks.
All the above optional technical solutions may be combined arbitrarily to form optional embodiments of the present application, and are not described herein again.
Based on the same technical concept, the embodiment of the present application further provides a device for predicting depths of an inlet target point and a terminal point of a horizontal well, where the device may be a terminal in the above embodiment, as shown in fig. 3, the device includes:
the first construction module 301 is configured to construct a time domain seismic profile of a target region based on seismic interpretation data of the target region, and mark a drilled entry target point and a vertical projection point of the entry target point at a bottom boundary of a target oil reservoir in the time domain seismic profile, where the drilled entry target point and the target oil reservoir are located in the target region;
the marking module 302 is used for marking an inlet target point and a tail end point of the horizontal well in a time domain seismic profile based on the well position of the horizontal well which is designed in advance;
the second construction module 303 is configured to construct a depth domain reservoir profile of the target reservoir based on the depth measurement value of the target reservoir, and mark a drilled entry target point and a vertical projection point of the entry target point on a bottom boundary of the target reservoir in the depth domain reservoir profile;
the processing module 304 is used for performing telescopic processing on the time domain seismic profile, and respectively overlapping the drilled entry target point and the vertical projection point in the time domain seismic profile with the drilled entry target point and the vertical projection point in the depth domain seismic profile;
and the determining module 305 is used for determining the depth values of the reservoir profile maps of the depth domains corresponding to the inlet target point and the end point of the horizontal well as the depths of the inlet target point and the end point of the horizontal well.
Optionally, the first building block 301 is further configured to:
calculating to obtain a time value corresponding to the depth measurement value based on the depth measurement value of the drilled inlet target point and a time-depth relation in the seismic interpretation data;
the drilled entry target point is marked in the time domain seismic profile based on the time value and the drilled well position.
Optionally, the second building module 303 is further configured to:
the drilled entry targets are marked in the depth domain reservoir profile based on the depth measurements of the drilled entry targets and the drilled well locations.
Optionally, the determining module 305 is configured to:
and determining target positions of the inlet target point and the tail end point of the horizontal well based on the depth values of the inlet target point and the tail end point of the horizontal well and pre-designed longitude and latitude coordinates corresponding to the inlet target point and the tail end point of the horizontal well.
Optionally, the determining module 305 is further configured to:
and determining the stratigraphic dip angle of the borehole trajectory of the horizontal well based on the target positions of the inlet target point and the end point of the horizontal well.
The beneficial effects brought by the technical scheme provided by the embodiment of the application at least comprise:
according to the method for predicting the depths of the inlet target point and the end point of the horizontal well, a depth domain oil deposit profile map of a target oil deposit is constructed based on the actual depth measurement value of the target oil deposit. And finally, taking the depth values of the depth domain oil reservoir profile corresponding to the inlet target point and the tail end point of the horizontal well as the depths of the inlet target point and the tail end point of the horizontal well. According to the method provided by the embodiment of the application, the time domain seismic profile and the depth domain oil reservoir profile are compared and analyzed, and the depth values in the depth domain seismic profile are accurate, so that the method provided by the embodiment of the application reduces the depth error of the inlet target point and the tail end point of the horizontal well, improves the accuracy of predicting the depth of the inlet target point and the tail end point of the horizontal well, and further improves the accuracy of subsequently designed well tracks.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
It should be noted that: the device for predicting the depths of the inlet target point and the end point of the horizontal well provided by the embodiment is only exemplified by the division of the functional modules when predicting the depths of the inlet target point and the end point of the horizontal well, and in practical application, the functions can be distributed by different functional modules according to needs, that is, the internal structure of the computer equipment is divided into different functional modules to complete all or part of the functions described above. In addition, the device for predicting the depths of the inlet target point and the end point of the horizontal well provided by the embodiment and the method embodiment for predicting the depths of the inlet target point and the end point of the horizontal well belong to the same concept, and the specific implementation process is described in the method embodiment in detail and is not described again.
Fig. 4 is a block diagram of a terminal 400 according to an embodiment of the present disclosure. The terminal 400 may be: a smart phone, a tablet computer, an MP3 player (Moving Picture Experts Group Audio Layer III, motion video Experts compression standard Audio Layer 3), an MP4 player (Moving Picture Experts Group Audio Layer IV, motion video Experts compression standard Audio Layer 4), a notebook computer, or a desktop computer. The terminal 400 may also be referred to by other names such as user equipment, portable terminal, laptop terminal, desktop terminal, etc.
Generally, the terminal 400 includes: a processor 401 and a memory 402.
In some embodiments, the terminal 400 may further optionally include: a peripheral interface 403 and at least one peripheral. The processor 401, memory 402 and peripheral interface 403 may be connected by bus or signal lines. Each peripheral may be connected to the peripheral interface 403 via a bus, signal line, or circuit board. Specifically, the peripheral device includes: at least one of radio frequency circuitry 404, touch screen display 405, camera 406, audio circuitry 407, positioning components 408, and power supply 409.
The peripheral interface 403 may be used to connect at least one peripheral related to I/O (Input/Output) to the processor 401 and the memory 402. In some embodiments, processor 401, memory 402, and peripheral interface 403 are integrated on the same chip or circuit board; in some other embodiments, any one or two of the processor 401, the memory 402 and the peripheral interface 403 may be implemented on a separate chip or circuit board, which is not limited by this embodiment.
The Radio Frequency circuit 404 is used for receiving and transmitting RF (Radio Frequency) signals, also called electromagnetic signals. The radio frequency circuitry 404 communicates with communication networks and other communication devices via electromagnetic signals. The rf circuit 404 converts an electrical signal into an electromagnetic signal to transmit, or converts a received electromagnetic signal into an electrical signal. Optionally, the radio frequency circuit 404 includes: an antenna system, an RF transceiver, one or more amplifiers, a tuner, an oscillator, a digital signal processor, a codec chipset, a subscriber identity module card, and so forth. The radio frequency circuitry 404 may communicate with other terminals via at least one wireless communication protocol. The wireless communication protocols include, but are not limited to: metropolitan area networks, various generation mobile communication networks (2G, 3G, 4G, and 5G), Wireless local area networks, and/or WiFi (Wireless Fidelity) networks. In some embodiments, the rf circuit 404 may further include NFC (Near Field Communication) related circuits, which are not limited in this application.
The display screen 405 is used to display a UI (User Interface). The UI may include graphics, text, icons, video, and any combination thereof. When the display screen 405 is a touch display screen, the display screen 405 also has the ability to capture touch signals on or over the surface of the display screen 405. The touch signal may be input to the processor 401 as a control signal for processing. At this point, the display screen 405 may also be used to provide virtual buttons and/or a virtual keyboard, also referred to as soft buttons and/or a soft keyboard. In some embodiments, the display screen 405 may be one, providing the front panel of the terminal 400; in other embodiments, the display screen 405 may be at least two, respectively disposed on different surfaces of the terminal 400 or in a folded design; in still other embodiments, the display 405 may be a flexible display disposed on a curved surface or a folded surface of the terminal 400. Even further, the display screen 405 may be arranged in a non-rectangular irregular pattern, i.e. a shaped screen. The Display screen 405 may be made of LCD (Liquid Crystal Display), OLED (Organic Light-Emitting Diode), and other materials.
The camera assembly 406 is used to capture images or video. Optionally, camera assembly 406 includes a front camera and a rear camera. Generally, a front camera is disposed at a front panel of the terminal, and a rear camera is disposed at a rear surface of the terminal. In some embodiments, the number of the rear cameras is at least two, and each rear camera is any one of a main camera, a depth-of-field camera, a wide-angle camera and a telephoto camera, so that the main camera and the depth-of-field camera are fused to realize a background blurring function, and the main camera and the wide-angle camera are fused to realize panoramic shooting and VR (Virtual Reality) shooting functions or other fusion shooting functions. In some embodiments, camera assembly 406 may also include a flash. The flash lamp can be a monochrome temperature flash lamp or a bicolor temperature flash lamp. The double-color-temperature flash lamp is a combination of a warm-light flash lamp and a cold-light flash lamp, and can be used for light compensation at different color temperatures.
The audio circuit 407 may include a microphone and a speaker. The microphone is used for collecting sound waves of a user and the environment, converting the sound waves into electric signals, and inputting the electric signals to the processor 401 for processing, or inputting the electric signals to the radio frequency circuit 404 for realizing voice communication. For the purpose of stereo sound collection or noise reduction, a plurality of microphones may be provided at different portions of the terminal 400. The microphone may also be an array microphone or an omni-directional pick-up microphone. The speaker is used to convert electrical signals from the processor 401 or the radio frequency circuit 404 into sound waves. The loudspeaker can be a traditional film loudspeaker or a piezoelectric ceramic loudspeaker. When the speaker is a piezoelectric ceramic speaker, the speaker can be used for purposes such as converting an electric signal into a sound wave audible to a human being, or converting an electric signal into a sound wave inaudible to a human being to measure a distance. In some embodiments, audio circuitry 407 may also include a headphone jack.
The positioning component 408 is used to locate the current geographic position of the terminal 400 for navigation or LBS (Location Based Service). The Positioning component 408 may be a Positioning component based on the GPS (Global Positioning System) of the united states, the beidou System of china, the graves System of russia, or the galileo System of the european union.
The power supply 409 is used to supply power to the various components in the terminal 400. The power source 409 may be alternating current, direct current, disposable or rechargeable. When power source 409 comprises a rechargeable battery, the rechargeable battery may support wired or wireless charging. The rechargeable battery may also be used to support fast charge technology.
In some embodiments, the terminal 400 also includes one or more sensors 410. The one or more sensors 410 include, but are not limited to: acceleration sensor 411, gyro sensor 412, pressure sensor 413, fingerprint sensor 414, optical sensor 415, and proximity sensor 416.
The acceleration sensor 411 may detect the magnitude of acceleration in three coordinate axes of the coordinate system established with the terminal 400. For example, the acceleration sensor 411 may be used to detect components of the gravitational acceleration in three coordinate axes. The processor 401 may control the touch display screen 405 to display the user interface in a landscape view or a portrait view according to the gravitational acceleration signal collected by the acceleration sensor 411. The acceleration sensor 411 may also be used for acquisition of motion data of a game or a user.
The gyro sensor 412 may detect a body direction and a rotation angle of the terminal 400, and the gyro sensor 412 may cooperate with the acceleration sensor 411 to acquire a 3D motion of the terminal 400 by the user. From the data collected by the gyro sensor 412, the processor 401 may implement the following functions: motion sensing (such as changing the UI according to a user's tilting operation), image stabilization at the time of photographing, game control, and inertial navigation.
The pressure sensor 413 may be disposed on a side bezel of the terminal 400 and/or a lower layer of the touch display screen 405. When the pressure sensor 413 is disposed on the side frame of the terminal 400, a user's holding signal to the terminal 400 can be detected, and the processor 401 performs left-right hand recognition or shortcut operation according to the holding signal collected by the pressure sensor 413. When the pressure sensor 413 is disposed at the lower layer of the touch display screen 405, the processor 401 controls the operability control on the UI interface according to the pressure operation of the user on the touch display screen 405. The operability control comprises at least one of a button control, a scroll bar control, an icon control and a menu control.
The fingerprint sensor 414 is used for collecting a fingerprint of the user, and the processor 401 identifies the identity of the user according to the fingerprint collected by the fingerprint sensor 414, or the fingerprint sensor 414 identifies the identity of the user according to the collected fingerprint. Upon recognizing that the user's identity is a trusted identity, processor 401 authorizes the user to perform relevant sensitive operations including unlocking the screen, viewing encrypted information, downloading software, paying, and changing settings, etc. The fingerprint sensor 414 may be disposed on the front, back, or side of the terminal 400. When a physical key or vendor Logo is provided on the terminal 400, the fingerprint sensor 414 may be integrated with the physical key or vendor Logo.
The optical sensor 415 is used to collect the ambient light intensity. In one embodiment, the processor 401 may control the display brightness of the touch display screen 405 based on the ambient light intensity collected by the optical sensor 415. Specifically, when the ambient light intensity is high, the display brightness of the touch display screen 405 is increased; when the ambient light intensity is low, the display brightness of the touch display screen 405 is turned down. In another embodiment, the processor 401 may also dynamically adjust the shooting parameters of the camera assembly 406 according to the ambient light intensity collected by the optical sensor 415.
A proximity sensor 416, also known as a distance sensor, is typically disposed on the front panel of the terminal 400. The proximity sensor 416 is used to collect the distance between the user and the front surface of the terminal 400. In one embodiment, when the proximity sensor 416 detects that the distance between the user and the front surface of the terminal 400 gradually decreases, the processor 401 controls the touch display screen 405 to switch from the bright screen state to the dark screen state; when the proximity sensor 416 detects that the distance between the user and the front surface of the terminal 400 gradually becomes larger, the processor 401 controls the touch display screen 405 to switch from the breath screen state to the bright screen state.
Those skilled in the art will appreciate that the configuration shown in fig. 4 is not intended to be limiting of terminal 400 and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components may be used.
In an exemplary embodiment, a computer-readable storage medium, such as a memory including instructions executable by a processor in a terminal, is also provided to perform the method of determining a drilling rig target address of the above embodiments. For example, the computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
It will be understood by those skilled in the art that all or part of the steps of implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, and the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. A method of predicting the depth of an entry target point and an end point of a horizontal well for designing a wellbore trajectory for the horizontal well, the method comprising:
constructing a time domain seismic profile of a target region based on seismic interpretation data of the target region, and marking a drilled entry target point and a vertical projection point of the entry target point at the bottom boundary of a target oil reservoir in the time domain seismic profile, wherein the drilled entry target point and the target oil reservoir are positioned in the target region;
determining an intersection point of a central axis of a vertical section in the horizontal well and a target oil reservoir top boundary as an inlet target point based on a pre-designed well position of the horizontal well, determining a terminal point of the horizontal well according to the inlet target point of the horizontal well, a pre-designed extending direction and an extending distance, marking the inlet target point and the terminal point of the horizontal well in the time domain seismic profile, wherein the inlet target point is a starting point of a well track when the horizontal well drills to the oil reservoir, and the terminal point is an end point of the well track when the horizontal well drills to the oil reservoir;
constructing a depth domain reservoir profile of the target reservoir based on the depth measurement value of the target reservoir, and marking the drilled entry target point and a vertical projection point of the entry target point on the bottom boundary of the target reservoir in the depth domain reservoir profile;
performing telescopic processing on the time domain seismic profile, and respectively overlapping the drilled inlet target point and the vertical projection point in the time domain seismic profile with the drilled inlet target point and the drilled vertical projection point in the depth domain seismic profile;
and determining the depth values of the inlet target point and the end point of the horizontal well corresponding to the depth domain oil reservoir profile map as the depths of the inlet target point and the end point of the horizontal well.
2. The method of claim 1, wherein marking the time domain seismic profile of the drilled entry target comprises:
calculating to obtain a time value corresponding to the depth measurement value based on the depth measurement value of the drilled inlet target point and the time-depth relation in the seismic interpretation data;
marking the drilled entry target point in the time domain seismic profile based on the time value and the drilled well position.
3. The method of claim 1, wherein the marking the drilled entry target in the depth domain reservoir profile comprises:
marking the drilled entry target in the depth domain reservoir profile based on the depth measurements of the drilled entry target and the drilled well location.
4. The method according to claim 1, wherein after determining the depth values of the depth domain reservoir profile corresponding to the entry target point and the end point of the horizontal well as the depths of the entry target point and the end point of the horizontal well, the method further comprises:
and determining target positions of the inlet target point and the tail end point of the horizontal well based on the depth values of the inlet target point and the tail end point of the horizontal well and pre-designed longitude and latitude coordinates corresponding to the inlet target point and the tail end point of the horizontal well.
5. The method of claim 4, wherein after determining the target locations of the entry target point and the end point of the horizontal well, further comprising:
and determining the stratum inclination angle of the borehole trajectory of the horizontal well based on the target positions of the inlet target point and the end point of the horizontal well.
6. An apparatus for predicting depths of an entry target point and an end point of a horizontal well, for designing a wellbore trajectory of the horizontal well, the apparatus comprising:
the system comprises a first construction module, a second construction module and a third construction module, wherein the first construction module is used for constructing a time domain seismic profile of a target region based on seismic interpretation data of the target region, and marking a drilled entry target point and a vertical projection point of the entry target point at the bottom boundary of a target oil reservoir in the time domain seismic profile, wherein the drilled entry target point and the target oil reservoir are positioned in the target region;
the marking module is used for determining an intersection point of a central axis of a vertical section in the horizontal well and a target oil reservoir top boundary as an entrance target point based on a pre-designed well position of the horizontal well, determining a terminal point of the horizontal well according to the entrance target point, a pre-designed extending direction and an extending distance of the horizontal well, and marking the entrance target point and the terminal point of the horizontal well in the time domain seismic profile, wherein the entrance target point is a starting point of a well track when the horizontal well drills to the oil reservoir, and the terminal point is an end point of the well track when the horizontal well drills to the oil reservoir;
the second construction module is used for constructing a depth domain reservoir profile of the target reservoir based on the depth measurement value of the target reservoir, and marking the well-drilled inlet target point and a vertical projection point of the inlet target point on the bottom boundary of the target reservoir in the depth domain reservoir profile;
the processing module is used for performing telescopic processing on the time domain seismic profile and respectively superposing the drilled inlet target point and the vertical projection point in the time domain seismic profile and the drilled inlet target point and the vertical projection point in the depth domain seismic profile;
and the determining module is used for determining the depth values of the inlet target point and the end point of the horizontal well, which correspond to the depth domain oil reservoir profile map, and taking the depth values as the depths of the inlet target point and the end point of the horizontal well.
7. The apparatus of claim 6, wherein the first building module is further configured to:
calculating to obtain a time value corresponding to the depth measurement value based on the depth measurement value of the drilled inlet target point and the time-depth relation in the seismic interpretation data;
marking the drilled entry target point in the time domain seismic profile based on the time value and the drilled well position.
8. The apparatus of claim 6, wherein the second building module is further configured to:
marking the drilled entry target in the depth domain reservoir profile based on the depth measurements of the drilled entry target and the drilled well location.
9. The apparatus of claim 6, wherein the determining module is configured to:
and determining target positions of the inlet target point and the tail end point of the horizontal well based on the depth values of the inlet target point and the tail end point of the horizontal well and pre-designed longitude and latitude coordinates corresponding to the inlet target point and the tail end point of the horizontal well.
10. The apparatus of claim 9, wherein the determining module is further configured to:
and determining the stratum inclination angle of the borehole trajectory of the horizontal well based on the target positions of the inlet target point and the end point of the horizontal well.
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