Научно-технический журнал

«Onshore and offshore oil and gas well construction»

ISSN 0130-3872

Onshore and offshore oil and gas well construction
Results of using Ultra-Block composition to eliminate loss when drilling trappean intrusion

UDC: 622.248.9
DOI: 10.33285/0130-3872-2023-10(370)-5-8

Authors:

OVCHINNIKOV VASILY P.1,
RASPOPOVA MARINA V.1,
ROZHKOVA OKSANA V.1,
OVCHINNIKOV PAVEL V.2

1 Tyumen Industrial University, Tyumen, Russia
2 Sergo Ordzhonikidze Russian State Geological Prospecting University, Moscow, Russia

Keywords: absorption, traps, dolerites, intrusions, cement slurry, bridging agent, viscoelastic pack, reagent

Annotation:

The construction of wells in case of presence of a trappean intrusion in the geological section comes across a set of problems which cause a decrease of drilling speeds, rapid wear of rock cutting equipment, time and material costs for combating losses of drilling fluid as well as accidents like drill strings sticking. The unpredictability of this geological formation behavior during drilling significantly complicates the drilling conditions: for example, the time spent on fighting accidents in this interval takes from 4 to 42 days. The article describes the Ultra-Block high filtration cementing compound that provides a solution of this problem.

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