IDEA #3PXH49 GEOLOGY-TECHNOLOGICAL DRILLING PREDICTION SYSTEM

GEOLOGY-TECHNOLOGICAL DRILLING PREDICTION SYSTEM core recovery Description Solution of a number of issues like lithologic section rock porosity estimation, collectors partitioning saturation assessment, interval determination, abnormally high pore pressure intervals prediction, pore pressure gradient and hydro-rupture calculation, physical-mechanical rocks properties assessment, boring heads choice, rational drilling regime provision, assessment of boring head lifetime while drilling, well’s construction and drilling agent parameters determination is possible when there is available an accurate geology-technological data acquisition. It is very important when it deals with complex conditions during exploration works, deep drilling in hard-to-reach areas as well as marine sites. The worked out algorithm enables to make an operative assessment of geological, technological and other section characteristics. Innovative Aspects and Main Advantages Program complex “System of geology-technological drilling prediction” allows estimating geological parameters (lithology, porosity, permeability, solidity etc.). Calculations are based on methods of d- exponents; equilibrium d-exponents (d0); sigma- logging; pore pressure gradient by d-exponent; pore pressure gradient by sigma-logging; porosity by sigma-logging taking into account rocks clayiness; poisson's required drilling agent density; intensity of mechanical speed decrease in time. Program can be used for different complexes of deposits (terrigene, carbonate and mixed types). ratio; hydro-rupture gradient, Areas of application This product can be used during: − Assessment rock properties and solution of technological issues when drilling production and exploratory wells; physical-mechanical of − Solution of geological tasks (assessment of lithology, filter-capacitive properties, mechanical properties, pore pressures and hydro-rupture pressures); − Solution of technological tasks (boring head lifetime construction determination, contingency prediction, drilling agent density determination). assessment, well 0,17 0,22 0,27 0,32 0 0,1 0,2 0,3 0 0,05 0,1 0,15 0,001 0,021 0,041 0,061 0,081 4,323 4,423 4,523 4,623 4,723 4,823 4,923 5,023 5,123 5,223 4,323 4,423 4,523 4,623 4,723 4,823 4,923 AHPP 5,023 5,123 5,223 4,323 4,423 4,523 4,623 4,723 4,823 4,923 5,023 5,123 5,223 4,323 4,423 4,523 4,623 4,723 4,823 4,923 5,023 5,123 5,223 Fig. 1. Results of interpretation are given in the program complex «System of geology-technological drilling prediction» following the example of the South Caspian Depression field». Stage of development Program complex was tested on the base of well drilling data in Azerbaijan, Russia, Ukraine, Kazakhstan. Contact details Institute of Geology NASA Contact persons: Corresponding Member ANAS Dr. Galib M. Efendiyev, Dr. Poletayev A.V. & Poletayeva Y.V. Address: 29 A, H. Javid Avenue AZ1143, Azerbaijan, Baku Tel: (+994.12) 5100141 Fax: (+994.12) 4975285 E-mail:avo1@mail.ru; alexsander@gia.ab.az; yelenapv@mail.ru; yelena@gia.ab.az