Global Patent Index - EP 3015642 A1

EP 3015642 A1 20160504 - GAS INJECTION APPARATUS WITH CONTROLLABLE GAS INJECTION POINT, GAS INJECTION PROCESS, AND GASIFICATION METHOD

Title (en)

GAS INJECTION APPARATUS WITH CONTROLLABLE GAS INJECTION POINT, GAS INJECTION PROCESS, AND GASIFICATION METHOD

Title (de)

GASINJEKTIONSVORRICHTUNG MIT STEUERBAREM GASINJEKTIONSPUNKT, GASINJEKTIONSVERFAHREN UND VERGASUNGSVERFAHREN

Title (fr)

APPAREIL D'INJECTION DE GAZ À POINT D'INJECTION DE GAZ RÉGLABLE, PROCÉDÉ D'INJECTION DE GAZ ET PROCÉDÉ DE GAZÉIFICATION

Publication

EP 3015642 A1 20160504 (EN)

Application

EP 14818691 A 20140327

Priority

  • CN 201310260123 A 20130626
  • CN 2014074200 W 20140327

Abstract (en)

A gas injection apparatus with a controllable gas injection point, a gas injection process, and a gasification method. The gas injection apparatus comprises a directional well channel (6), where a continuous oil pipe (3) is provided in the directional well channel (6). The continuous oil pipe (3) is connected to an oxygen/oxygen-rich gas pipeline. An annular gap between the continuous oil pipe (3) and the directional well channel (6) is connected to an auxiliary gasification agent pipeline and a vapor pipeline. A gas injection wellhead (2) is provided at the start end of the continuous oil pipe (3), and a nozzle (4) is provided at the tail end. In the present invention, based on directional drilling and continuous oil pipe technologies, the movement of a gas injection point is implemented by using a manner of combining directional drilling and a continuous oil pipe; meanwhile, by using a principle of controlling reverse combustion by adjusting a gasification agent injection parameter, the movement of a working surface position and a combustion speed of a flame are regulated, so as to achieve the objective of ignition and gasification for reverse combustion of an underground coal layer.

IPC 8 full level

E21B 43/295 (2006.01)

CPC (source: EP US)

E21B 7/046 (2013.01 - US); E21B 7/06 (2013.01 - US); E21B 43/243 (2013.01 - EP); E21B 43/295 (2013.01 - US); E21B 43/305 (2013.01 - EP)

Citation (search report)

See references of WO 2014206122A1

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

EP 3015642 A1 20160504; AU 2014303165 A1 20160121; AU 2014303165 B2 20160922; CN 104251133 A 20141231; CN 104251133 B 20180223; US 2016123128 A1 20160505; WO 2014206122 A1 20141231; ZA 201509226 B 20191218

DOCDB simple family (application)

EP 14818691 A 20140327; AU 2014303165 A 20140327; CN 201310260123 A 20130626; CN 2014074200 W 20140327; US 201414898489 A 20140327; ZA 201509226 A 20151218