燃气式超正压射孔技术在胡庆油田的应用

Application Of Combustion-Gas Ultraposit ive-Pressure Perforating Technique in Huqing Oilfie ld Development

( 1. 中原油田分公司采油工程技术研究院 2. 中原油田分公司采油一厂 3. 中原油田分公司采油五厂)

 Petroleum Engineer ing Institute,
Zhongyuan O ilfie ld Company, SINOPEC, Puyang
457001, China

Combustion-gas ultrapositive-pressure perfo rating is a k ind
o f new perforating technique. Before perforating, the gas is
burnt w ith gunpowder, then the target bed generates high
pressure, o il and gas are opened to flow in wellbo re. In contrast
w ith the general perfo rating, the techno logy is characteristic o f
fracturing and perforating functions. Not on ly o il and gas can be
opened to flow in we llbore, but a lso the pressure loss in
mi m ediate v icin ity of the we llbore and the skin facto r can
decrease. From 2002 to 2004, in the light of the characters and
the geo log ic conditions o f the Huqing Oilfield, 35 w ells
belong ing to low permeab ility and low pressure reservo ir are
selected to bring into effec.t After them easures, we have ga ined
rem arkable econom ic benefits, such as the average sing le-we ll
production increase o f 3. 6 tons and cumu lative production 368. 6
tons. The practice has proved that the techn ique has mi portant
sign ificance practica lly in the low perm eability and the low
pressure reservo irs.