Analysis of Gas-Rise Velocities From Full-Scale Kick Experiments

Abstract

This paper was selected for presentation by an SPE Program Committee following review of information contained in an abstract submitted by the authorp). Contents of the paper, as presented, have not been reviewed by the Society of Petroleum Engineers and are subject to correction by the author@). The material, as presented, does not necessarily reflect anv Dosition of the Societv of Petroleum Enaineers. its officers. or members. P a w s oresented at SPE meetinas are subiect to oublication review bv Editorial Committees of thiSocietv of b9troleum Eng~neers. 6ermission to copy is restricted to en abstract of not more'than'300 words. Illustrations may not be copied. i h e abstract should contain conspicuous acknow~ed~me~ of where and by whom the paper is presented. Write Librarian, SPE, P.O. Box 833836, Richardson, TX 750883836 U S A . Telex, 730989 SPEDAL. AbstractGas kick experiments in oil-and water-based mud have been studied in a full scale inclined research well. One of the main objectives from these experiments has been the study of gas rise velocities. In order to analyse the gas velocities, the parameters varying during a real drilling operation have been systemized and gathered in a data base. The work represents a significant extension to existing correlations for gaspiquid flows in a full scale inclined annulus with real drilling muds.In high concentration gas kicks the gas rises faster than in low and medium concentration kicks, this is obsemed for both oil and water based mud. The rise velocity correlations obtained from these experiments is not significantly dependent on gas void fraction, mud density, inclination, mud rheology, and surface tension. The results are quite different from other previously reported correlations, and this has a major implication on kick simulations.

Gas Kick Simulation Study for Horizontal Wells

“…and the nature of sequence of events leading to the well closure for all three thenon-Newtonianfluid. While some studies (7)(8)(9) have been wells is the same as that for the earlier discussions. and are being conducted.…”

“…For kick control in horizontal wells in general: (8) The use of the Wait-and-Weight method may not yield lower peak choke pressure as it may in a conventional well. Also.…”

“…Recently, studies (7)(8)(9) have been conducted which have contributed to the better understanding of the gas migration in a deviated Single-and Two-Phase Friction. For a single phase mud, both the Power Law and Bingham Plastic models have been used.…”

Opening New Exploration Frontiers With The Micro-Flux Control Method For Well Design

“…This has been addressed in several publications [25][26][27][28][29][30][31][32][33][34][35][36][37][38][39] . When using the MFC technique, one sees a direct benefit for the entire well construction operation if this criterion is well understood and applied.…”