«Onshore and offshore oil and gas well construction»

"Digital drill cuttings" – enhanced study of the drill cuttings during Exploration and Production wells drilling process

UDC: 553.982.2
DOI: 10.33285/0130-3872-2021-12(348)-5-15

Authors:

¹ Lomonosov Moscow State University, Moscow, Russian Federation
² LLC "GazpromInvest", St. Petersburg, Russian Federation

Keywords: digital drill cuttings; drill cuttings; neutron logging (NL); nuclear magnetic resonance (NMR); litoscanner; gamma-gamma logging (GGL); spectrometric gamma logging (SGL); portable laser emission spectrometer

Annotation:

Since 2018, the Institute for Advanced Study of Oil and Gas of Lomonosov Moscow State University, together with the Petroleum Department of the Geological Faculty of Lomonosov Moscow State University and experts in the oil and gas industry, has been developing an integrated technology for clarifying and forecasting a geological section during drilling exploration and production wells. At the intersection of oil and gas geology, petrophysics, geochemistry and drilling, a fundamentally new approach to in-depth study of drill cuttings has been developed and proposed for commercial use in conjunction with geophysical well survey (GIS) methods (neutron logging (NL), nuclear magnetic resonance (NMR), lithoscanner, gamma-gamma logging (GGL), spectrometric gamma-ray logging (SGRL). The basis of the complex for in-depth study of cuttings in order to determine the mineralogical composition and reservoir properties is a portable laser emission spectrometer (LIBS), which was originally used only in the mining and metallurgical industries to determine the chemical composition of alloys and ore raw materials. The demand for the above-said method is caused by the necessity of an operational geological forecast of complications during drilling of complex wells and refinement of geological and hydrodynamic models of hydrocarbon deposits based on the data of drilling of a dense network of production wells in which core sampling is minimal or not provided.

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