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Developing software prototype for well cost estimation and its ability

UDK: 336.6:622.24
Key words: cost engineering in drilling, prototype of software system, technical limit in well cost
Authors: I.F. Rustamov, A.O. Sobolev, G.V. Sozonenko Ph.D. (Gazprom Neft PJSC, RF, Saint-Peterburg), Yu.V. Maksimov, S.V. Tretyakov, S.I. Semenov, A.A. Karachev, A.N. Khomitskiy (Gazpromneft NTC LLC, RF, Saint-Petersburg and Tyumen)

In this article shown a workflow for developing own prototype of software program for well cost estimation at stages “Evaluation” and “Selection” of oil project in Gazprom Neft PJSC. According to the concept of prototype software development it was divided two basic parts in well cost estimations, they are technical and cost estimation. In technical part of prototype are included model of physical indicators calculation, database of general and typical technical designs and database of actual drilled wells on company’s assets. Software prototype provides different options of calculation depending on volume and quality of initial data for the possibility of its use on different project stages. Software prototype was developed based on VBA in Excel and technical specification for programming. In close collaboration of software developer and technical specialists modules was developed and programmed which are allow to predict physical volumes of well construction. Cost estimation part includes cooperation with cost database and algorithm of service rates determination. As a result estimation is formed with well cost forecast based on determined and specific parameters in technical modules. Today it is tracked ability to use this algorithm in brownfields for business planning of current activities for one to five years. Using a developed tool ‘limit in well cost’ was calculated.  The modeled result shown that actual minimum cost of well is higher than ‘limit in well cos’.

References

1. Khasanov M.M., Sugaipov D.A., Maksimov Yu.V. et al., Cost engineering

in Gazprom Neft PJSC: current situation and future development (In Russ.),

Neftyanoe khozyaystvo = Oil Industry, 2015, no. 12, pp. 30–33.

2. Pogadaev S.V., Sobolev A.O., Karsakov V.A. et al., Technical Limit: a

way to improve drilling efficiency (In Russ.), Neftyanoe khozyaystvo = Oil

Industry, 2015, no. 12, pp. 28–29.

3. Bond D.F. et al., Applying technical limit methodology for step change

in understanding and performance, SPE 51181, 1998.

4. Shreuder J.C., Sharpe P.J., Drilling the limit* - A key to reduce well costs,

SPE 57258, 1999.

In this article shown a workflow for developing own prototype of software program for well cost estimation at stages “Evaluation” and “Selection” of oil project in Gazprom Neft PJSC. According to the concept of prototype software development it was divided two basic parts in well cost estimations, they are technical and cost estimation. In technical part of prototype are included model of physical indicators calculation, database of general and typical technical designs and database of actual drilled wells on company’s assets. Software prototype provides different options of calculation depending on volume and quality of initial data for the possibility of its use on different project stages. Software prototype was developed based on VBA in Excel and technical specification for programming. In close collaboration of software developer and technical specialists modules was developed and programmed which are allow to predict physical volumes of well construction. Cost estimation part includes cooperation with cost database and algorithm of service rates determination. As a result estimation is formed with well cost forecast based on determined and specific parameters in technical modules. Today it is tracked ability to use this algorithm in brownfields for business planning of current activities for one to five years. Using a developed tool ‘limit in well cost’ was calculated.  The modeled result shown that actual minimum cost of well is higher than ‘limit in well cos’.

References

1. Khasanov M.M., Sugaipov D.A., Maksimov Yu.V. et al., Cost engineering

in Gazprom Neft PJSC: current situation and future development (In Russ.),

Neftyanoe khozyaystvo = Oil Industry, 2015, no. 12, pp. 30–33.

2. Pogadaev S.V., Sobolev A.O., Karsakov V.A. et al., Technical Limit: a

way to improve drilling efficiency (In Russ.), Neftyanoe khozyaystvo = Oil

Industry, 2015, no. 12, pp. 28–29.

3. Bond D.F. et al., Applying technical limit methodology for step change

in understanding and performance, SPE 51181, 1998.

4. Shreuder J.C., Sharpe P.J., Drilling the limit* - A key to reduce well costs,

SPE 57258, 1999.



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