Task 2: Stimulation GPK3 and GPK4, tests and maintenance of reservoir and wellheads

	Low Rate Hydraulic Test of GPK2, 3 and 4: Puls Test for GPK2	February 2006
	Preparation for Killing od wells: To kill wells for works on wellheads without pressure, brine will be injected. Mixing of brine = water and salt with density of 1,13 g/cm3	March 2006
	Low Rate Hydraulic Test of GPK2, 3 and 4: Online Conductivity measurement	March 2006
	Low Rate Hydraulic Test of GPK2, 3 and 4: Low Rate Injection Pump	March 2006
	Temperature-Logging GPK3 and GPK4: Temperature Logging online with Pt1000 GGA-Tool performed by GGA-Institute Hannover (Germany)	March 2006
	Flow - Log GPK4 Flow-Log performed by Schulze GmbH Company (Schulze wellpressure-recording Salzwedel, Germany) with Panex-Tool 2675B MRO Flowmeter 175°C/700 bar	March 2006
	Steel pipe instaed of flexible hose pipe The old hose connection (limited temperature) between injection pump and wellheads has been replaced by steel pipe PN40	April 2006
	Revision of separator The separator has been completely overhauled	April 2006
	Acidizing GPK4 (RMA) Acidification of GPK4 to improve the productivity - reduce skin in reservoir and creating new pathways around the borehole (Mud Acid)	May 2006
	Revision Downhole Seismic Revision of downhole seismic sondes (accelerometers), rebuilding of high temperature amplifiers	September 2006
	Flow-Log GPK3 Flow-Log (Injection of 30 l/s) of GPK3 with Schlumberger tools and staff for casing inspection and measurement of open hole	October 2006
	Flow-Log GPK4 Flow-Log (Injection of 30 l/s) of GPK4 with Schlumberger tools and staff for casing inspection and measurement of open hole	October 2006
	Production Test GPK3 Production of brine out of GPK3 during 2,5 days (~1.500 m3)	October 2006
	Stimulation NTA GPK4 Injection of 200m2 NTA for chemical stimulation of reservoir GPK4	October 2006
	Maintenance Wellhead GPK 4 Replacing pack-off GPK4 Viton-Gasket and maintenance of Valves and Wellhead (Greasing, new gaskets etc.) Welding the landing ring on Casing 9 5/8"	November 2006
	GTC Fiber optic cable for Temperature Logging EPS1 Installation of Fiber optic cable for Temperature Logging EPS1 (GTC)	November 2006
	Maintenance Wellhead GPK 3 Replacing pack-off GPK3 Viton-Gasket and maintenance of Valves and Wellhead, Installation of re-conditioned Packoff	December 2006
	Maintenance Wellhead GPK 3 Old Gasket to be replaced, GPK3 Pack off	December 2006
	Injection and Production tests GPK3 and GPK4 Activation GPK3 and GPK4, Production GPK3 and GPK4, Injection SRT GPK4, Injection OneStep GPK3	January 2007
	Stimulation of GPK3 and GPK4 with OCA Chemical treatment if GPK3 and GPK4 with Organic Clay Acid	February 2007
	Production tests GPK3 and GPK4 after OCA-injection Production of GPK3 and GPK4 for 2-3 days after OCA-Treatment to determine the productivity	March 2007
	Injection test 30 l/s into GPK3 Injection of 10.000 qm of fresh water into GPK3 with injection pump	June 2007
	Injection test 30 l/s into GPK3 Measurement of T and p on surface, but also downhole with 2 memory tools and one online tool. Dowhole logging performed by Schulze wellpressure-recording	June 2007