Prosecution Insights
Last updated: October 02, 2026
Application No. 18/670,483

METHOD FOR ESTIMATING FORMATION TOPS FOR A PROPOSED DRILLING WELL USING A GRIDDED INTERPOLATION METHOD

Non-Final OA §102§103
Filed
May 21, 2024
Examiner
TIMILSINA, SHARAD
Art Unit
Tech Center
Assignee
Saudi Arabian Oil Company
OA Round
1 (Non-Final)
74%
Grant Probability
Favorable
1-2
OA Rounds
5m
Est. Remaining
86%
With Interview

Examiner Intelligence

Grants 74% — above average
74%
Career Allowance Rate
125 granted / 168 resolved
+14.4% vs TC avg
Moderate +11% lift
Without
With
+11.1%
Interview Lift
resolved cases with interview
Typical timeline
2y 9m
Avg Prosecution
19 currently pending
Career history
195
Total Applications
across all art units

Statute-Specific Performance

§101
22.8%
-17.2% vs TC avg
§103
43.0%
+3.0% vs TC avg
§102
12.4%
-27.6% vs TC avg
§112
17.9%
-22.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 168 resolved cases

Office Action

§102 §103
DETAILED ACTION Notice of Pre-AIA or AIA Status The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . Information Disclosure Statement The information disclosure statement (IDS) submitted on -08/22/2024- is in compliance with the provisions of 37 CFR 1.97. Accordingly, the information disclosure statement is being considered by the examiner. Claim Objections Claim 2-10, 13-20 objected to because of the following informalities: The above claims are missing comma. The claims can be amended by adding a comma as shown in the example below: 2. The method of claim 1, further comprising…. Appropriate correction is required. Claim Rejections - 35 USC § 102 The following is a quotation of the appropriate paragraphs of 35 U.S.C. 102 that form the basis for the rejections under this section made in this Office action: A person shall be entitled to a patent unless – (a)(1) the claimed invention was patented, described in a printed publication, or in public use, on sale, or otherwise available to the public before the effective filing date of the claimed invention. (a)(2) the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention. Claim(s) 1-5, 9, 10, 11-15, 19, 20 is/are rejected under 35 U.S.C. 102 (a) (1)/(a) (2) as being anticipated by Calvo et al US 20110216066 A1 herein after “Calvo” Regarding claim 1, Calvo teaches A method for estimating formation tops for a proposed drilling well, the method comprising: identifying offset wells of the formation (para [0061] Referring to FIG. 2, an embodiment of the offset well selection screen is generally shown as item 200. Screen 200 facilitates the receipt and viewing of formation top data, lithology data and ARS data (collectively referred to as "well data") for desired offset wells…. an offset identification area 202 for identifying selected offsets wells for which the user has elected to import well data.); Examiner views the offset wells of the formation are identified using a screen/display. identifying one or more formation tops each corresponding to a formation depth point for each offset well (para [0061 Each selected offset well is identified in the offset identification area 202 as an offset entry 203 comprising…the total measured depth of the offset well, and the total time for the drilling of the offset well. Alternatively, each offset entry 203 may comprise any desired attributes of the offset well. [0062] Screen 200 also comprises a viewing area 204 having an offset graph area 205 for displaying graphs of the well data for each selected offset well, a proposed formation top graph 210 of the formation top data for the proposed well received by screen 100, a well depth axis 211 for displaying a common well depth axis shared by the graphs in the viewing area 204); Please see in Fig. 2, formation top graph in 204 for ABC sample well-completed, XYZ sample well completed and proposed well; one or more formations tops each corresponding to the formation depth point for each offset well is identified is Fig. 2. performing, in sequence and for each offset well, a grid construction whereby a depth point for the offset well is connected with a depth point of the proposed drilling well, said performing being repeated for each formation top of the offset well (para [0062] Screen 200 also comprises a viewing area 204 having an offset graph area 205 for displaying graphs of the well data for each selected offset well, a proposed formation top graph 210 of the formation top data for the proposed well received by screen 100, a well depth axis 211 for displaying a common well depth axis shared by the graphs in the viewing area 204 0065] Screen 300 also comprises a mapping area 304 for graphically mapping portions of the formation top data of the offset wells to portions of the formation top data of the proposed well. Mapping area 304 generally comprises: an offset FTL graph 306; a mapping graph 308; a proposed formation top graph 310; a well depth axis 311 for displaying a common well depth axis shared by the graphs in mapping area 304) Examiner views in Fig. 2, Screen 204 and 300 shows for each offset well (for example, ABC and XYZ sample well-completed) in sequence, a graph grid constructed by a depth axis 211 (i.e., depth point) is mapped or connected with the depth point for the proposed well. In Fig. 2 examiner views the grid construction is repeated for each formation top of the offset wells, ABC and XYZ sample well-completed. forming a stack of said grids (Examiner views the Fig. 2, 204 and Fig. 3, 304 form a graph (i.e., stack of grids), depth for each formation for each offset well and proposed well); and estimating a depth of the proposed drilling well for each formation by applying an interpolation method to said stack (para [0028] The normalizing may modify the depth associated with each element of the physical attribute data by performing a linear interpolation based upon the depths of the mapped portion of the offset formation top graph and the depths of the associated mapped portion of the proposed formation top graph.). Here examiner views the interpolation is used to modify (i.e., to estimate) the depth of the proposed drilling well for each formation based on the depths of the mapped portion of the offset well formation top graph (i.e., stacks of grid) Regarding claim 2, Calvo teaches the method of claim 1, further comprising combining each of the plurality of proposed drilling well depth points to generate a complete formation tops profile for the proposed drilling well (para 0067] The proposed formation top graph 310 displays a graph of the formation top data for the proposed well. The proposed formation top graph 310 comprises a plurality of sections 340 representing the formation tops expected to be encountered in the drilling of the proposed well.). Examiner views in Fig. 3 a combination of plurality of proposed drilling well depth points for each formation that creates a complete formations top profile 310 for the proposed drilling well. Regarding claim 3, Calvo teaches the method of claim 1 wherein the interpolation method comprises at least one of a linear, cubic, Akima, or spline method (para [0028] The normalizing may modify the depth associated with each element of the physical attribute data by performing a linear interpolation based upon the depths of the mapped portion of the offset formation top graph and the depths of the associated mapped portion of the proposed formation top graph.). Examiner views the interpolation as a linear method. Regarding claim 4, Calvo teaches the method of claim 1 wherein the interpolation method is adaptively selected based on a distribution and quality of the depth points within the grid (para [0028] The normalizing may modify the depth associated with each element of the physical attribute data by performing a linear interpolation based upon the depths of the mapped portion of the offset formation top graph and the depths of the associated mapped portion of the proposed formation top graph. [0062] Screen 200 also comprises a viewing area 204 having an offset graph area 205 for displaying graphs of the well data for each selected offset well, a proposed formation top graph 210 of the formation top data for the proposed well received by screen 100, a well depth axis 211 for displaying a common well depth axis shared by the graphs in the viewing area 204, and a magnification area 209 providing buttons for adjusting the magnification of graphs in the viewing area 204. The offset graph area 205 is further divided into one or more sub-areas 206, 208, each comprising graphs of the well data for a selected offset well). Examiner views prior art teaches adjusting the magnification of graphs in the selected viewing area 204 where formation distribution and a depth axis (i.e., with depth points within the grid or axis) are present. Adjusted and magnified graphs provide better view of distribution and quality of formation distribution and depth points in an axis or grid). Therefore, the interpolation method is also selected to adapt or perform based on the adjusted and magnified mapped or distribution of formations to the depth points in the depth axis or grid. Regarding claim 5, Calvo teaches the method of claim 1 wherein the interpolation method is adaptively selected based on geological characteristics of the formation tops (Fig. 2 and 3, para [0028] The normalizing may modify the depth associated with each element of the physical attribute data by performing a linear interpolation based upon the depths of the mapped portion of the offset formation top graph and the depths of the associated mapped portion of the proposed formation top graph.). Examiner views the interpolation performed by the prior art is selected for each formations tops physical attributes (i.e., include the geological characteristics like depth and location of formation tops) and the interpolation is adapted or performed based on each mapped portion or location (i.e., geological characteristics) of the offset well formation tops. Regarding claim 9, Calvo teaches the method of claim 2 wherein the estimated complete formation tops profile is used to identify optimal depths for critical drilling points (Fig. 3 para [0067] The proposed formation top graph 310 displays a graph of the formation top data for the proposed well. The proposed formation top graph 310 comprises a plurality of sections 340 representing the formation tops expected to be encountered in the drilling of the proposed well… Each section 340 is also vertically positioned and sized with respect to the well depth axis 311 such that the measured depth indicated on the well depth axis 311 for the top and bottom of the section 340 matches the depth of the top and bottom of the formation top associated with the section 340. The top and bottom depth of the section 340 may also be indicated by a pop-up textbox (not shown) that is generated in response to a user selecting a formation top section 340 using an input device). In Fig. 3 examiner views a complete formation tops profile 310 that is used to identify estimated or optimal depths at 311 for important or critical drilling points in the depth axis of chart 304. Regarding claim 10, Calvo teaches the method of claim 9 wherein the critical drilling points comprise points for coring, casing, screening, sampling, and installation of water pumps ([0002] In well drilling applications, wells are typically drilled based upon a predetermined well plan that defines the well survey and drilling parameters. The determination of a well plan for a proposed well is typically based upon a variety of information, such as, geological surveys at or nearby the proposed well, recorded physical attributes of completed offset wells nearby the proposed well, and other sources of geological information. Based upon this information, a well plan for the proposed well can be generated to optimize desired drilling attributes, such as, bit wear, rate of penetration, and drilling time.). Examiner views the determination of formation top for a proposed well defines important drilling well activities and attributes (i.e., coring, casing, screening, sampling and installation of water pump) at each depth or point of formation tops. Claims 11-15, 19, 20 are rejected as claims 1-5, 9, 10 respectively for having similar claim limitations. Claim Rejections - 35 USC § 103 The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. Claim(s) 6-8, 16-18 is/are rejected under 35 U.S.C. 103 as being unpatentable over Calvo in view of Jeong et al US 20230212934 A1 herein after Jeong. Regarding claim 6, Calvo teaches the method of claim 1, Calvo does not teach wherein identifying offset wells comprises selecting offset wells within a predetermined radius of the proposed drilling well Jeong teaches wherein identifying offset wells comprises selecting offset wells within a predetermined radius of the proposed drilling well (abstract: The present disclosure relates to systems, methods, and non-transitory computer-readable media for dynamically utilizing offset drill-well data generated within a threshold geographic area to determine formation-top trends and identify formation-top depths at a subject drill-well site. Para [0037] As further used herein, the term “threshold” in conjunction with a threshold geographic area refers to a sub-region or portion of a larger region. In particular, a threshold geographic area can include a configurable perimeter that includes a “subject drill-well site” (i.e., a location for a potential new drill-well). As an example, the threshold geographic area may include a five-mile radius, a ten-mile radius, etc. Examiner views the offset wells is determined to be located within a predetermined geographic area (i.e., 5- or 10-mile radius) of proposed well. Accordingly, it would have been obvious to one of ordinary skill in the art before the effective filing of the invention to have incorporated Jeong into Calvo for the purpose of identifying the offset wells within a predetermined radius of proposed well so that the physical and geographical properties of the proposed well can be accurately studied based on the offset wells. Regarding claim 7, Calvo teaches the method of claim 1 Calvo does not teach wherein performing a grid construction further comprises defining a coordinate system relative to the proposed drilling well and locations of the offset wells. Jeong teaches wherein performing a grid construction further comprises defining a coordinate system relative to the proposed drilling well and locations of the offset wells (para [0006] Aspects of the present disclosure can include methods, computer-readable media, and systems that dynamically utilize offset drill-well data generated within a threshold geographic area to determine formation-top trends and identify formation-top depths at a coordinate location. In particular, the disclosed systems can receive, from a client device, a user selection identifying a coordinate location at which formation-tops are desired. In response to receiving such a user selection, the disclosed systems can intelligently identify, among a large set of drill-wells, a specific subset of offset drill-wells near the coordinate location). Examiner views the offset wells is determined to be located with a coordinate system within a predetermined geographic area (i.e., 5- or 10-mile radius) of proposed well. Accordingly, it would have been obvious to one of ordinary skill in the art before the effective filing of the invention to have incorporated Jeong into Calvo for the purpose of identifying the offset wells within a predetermined radius of proposed well with a coordinate system so that the physical and geographical properties of the proposed well can be accurately studied based on the offset wells. Regarding claim 8, Calvo teaches the method of claim 7 Calvo does not teach wherein the coordinate system is three-dimensional. Jeong teaches the coordinate system is three-dimensional (para [0077] For example, as shown in FIGS. 4F-4G, the formation-top modeling system 104 can map a continuous subterranean surface of a formation between respective positions of the subset of drill-wells in a threshold geographic area. In particular, the formation-top modeling system 104 can isolate individual formations as shown in chart 446 of FIG. 4F, or map multiple (e.g., all) formations across the threshold geographic area as shown in chart 448 of FIG. 4G.). In Fig. 4A-4B, 4F-4G, Examiner views the offset wells is determined to be located with a three- dimensional coordinate system within a predetermined geographic area of proposed well. Accordingly, it would have been obvious to one of ordinary skill in the art before the effective filing of the invention to have incorporated Jeong into Calvo for the purpose of identifying the offset wells within a predetermined radius of proposed well with a three-dimensional coordinate system so that the physical and geographical properties of the proposed well can be accurately studied based on the offset wells. Claims 16-18 are rejected as claims 6-8 respectively for having similar claim limitations. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Maniar et al US 20200040719 A1 discusses proposing a new well based on the existing wells. Krist Jansson et al US 20170328181 A1 discusses method and apparatus for drilling a new well based on the sample wells. Any inquiry concerning this communication or earlier communications from the examiner should be directed to SHARAD TIMILSINA whose telephone number is (571)272-7104. The examiner can normally be reached Monday-Friday 9:00-5:00. Examiner interviews are available via telephone, in-person, and video conferencing using a USPTO supplied web-based collaboration tool. To schedule an interview, applicant is encouraged to use the USPTO Automated Interview Request (AIR) at http://www.uspto.gov/interviewpractice. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Catherine Rastovski can be reached at 571-270-0349. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of published or unpublished applications may be obtained from Patent Center. Unpublished application information in Patent Center is available to registered users. To file and manage patent submissions in Patent Center, visit: https://patentcenter.uspto.gov. Visit https://www.uspto.gov/patents/apply/patent-center for more information about Patent Center and https://www.uspto.gov/patents/docx for information about filing in DOCX format. For additional questions, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /SHARAD TIMILSINA/Examiner, Art Unit 2857 /Catherine T. Rastovski/Supervisory Primary Examiner, Art Unit 2857
Read full office action

Prosecution Timeline

May 21, 2024
Application Filed
Sep 04, 2026
Non-Final Rejection mailed — §102, §103 (current)

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Prosecution Projections

1-2
Expected OA Rounds
74%
Grant Probability
86%
With Interview (+11.1%)
2y 9m (~5m remaining)
Median Time to Grant
Low
PTA Risk
Based on 168 resolved cases by this examiner. Grant probability derived from career allowance rate.

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