Compact fluid disposal system and method for surface well testing

Abstract

A compact fluid disposal and surface well testing system and method, including a multiphase meter for flow-metering and sampling of a received oil/gas/water stream and generating flow information for the received oil/gas/water stream; a compact gas/liquid splitter coupled to the multiphase meter and configured for generating a gas rich stream, and a liquid rich stream from the oil/gas/water stream based on the flow information from the multiphase meter; and a free water knock out (FWKO)/holding tank coupled to the compact gas/liquid splitter for receiving the liquid rich stream from the compact gas/liquid splitter and degassing the liquid rich stream and performing oil/water separation on the liquid rich stream.

1 . A compact fluid disposal and surface well testing system, the system including:
 a multiphase meter for flow-metering and sampling of a received oil/gas/water stream and generating flow information for the received oil/gas/water stream;   a compact gas/liquid splitter coupled to the multiphase meter and configured for generating a gas rich stream, and a liquid rich stream from the oil/gas/water stream based on the flow information from the multiphase meter; and   a free water knock out (FWKO)/holding tank coupled to the compact gas/liquid splitter for receiving the liquid rich stream from the compact gas/liquid splitter and degassing the liquid rich stream and performing oil/water separation on the liquid rich stream.   
     
     
         2 . The system of  claim 1 , further comprising a wet gas flare coupled to the compact gas/liquid splitter for receiving the gas rich stream from the compact gas/liquid splitter. 
     
     
         3 . The system of  claim 2 , further comprising an oil burner coupled to the compact gas/liquid splitter and the FWKO/holding tank for receiving the liquid rich stream from the compact gas/liquid splitter or an oil stream from the FWKO/holding tank via a transfer pump therebetween. 
     
     
         4 . The system of  claim 3 , wherein the FWKO/holding tank includes a gas vent for venting gas that is degassed from the liquid rich stream by the FWKO/holding tank. 
     
     
         5 . The system of  claim 4 , wherein the FWKO/holding tank includes an output for sending fluids from the liquid rich stream to a rig tank or pit. 
     
     
         6 . The system of  claim 3 , wherein the FWKO/holding tank further includes an electro-coalescer for enhancing the purity of the water separated from the liquid rich stream. 
     
     
         7 . The system of  claim 6 , wherein the FWKO/holding tank further includes an auto-adjustable floating smart weir for optimizing the oil/water separation on the liquid rich stream. 
     
     
         8 . The system of  claim 5 , wherein the system is used for a beginning of a clean up phase of a well and effluent is directly sent to a holding compartment of the FWKO/holding tank for degassing purposes or flows through to the compact gas/liquid splitter to handle gas pockets. 
     
     
         9 . The system of  claim 5 , wherein the system is used for clean up of a well in development and effluent is pre-separated through the compact gas/liquid splitter, the liquid rich stream is sent to an oil/water separation compartment of the FWKO/holding tank for degassing and oil/water separation, wherein water is extracted from a bottom of the FWKO/holding tank for disposal, and separated oil is pumped and burned with the oil burner, and the gas rich stream is sent to the wet gas flare. 
     
     
         10 . The system of  claim 5 , wherein the system is used to stabilize flow of a well, wherein the liquid rich stream includes less than 25% of water so that a resulting liquid is directly burnable through the oil burner and the gas rich stream is sent to the wet gas flare. 
     
     
         11 . A method for fluid disposal and surface well testing system, the method including:
 flow-metering and sampling of a received oil/gas/water stream and generating flow information for the received oil/gas/water stream with a multiphase meter;   generating a gas rich stream, and a liquid rich stream from the oil/gas/water stream based on the flow information from the multiphase meter with a compact gas/liquid splitter coupled to the multiphase meter; and   receiving the liquid rich stream from the compact gas/liquid splitter and degassing the liquid rich stream and performing oil/water separation on the liquid rich stream with a free water knock out (FWKO)/holding tank coupled to the compact gas/liquid splitter.   
     
     
         12 . The method of  claim 11 , further comprising receiving the gas rich stream from the compact gas/liquid splitter with a wet gas flare coupled to the compact gas/liquid splitter. 
     
     
         13 . The method of  claim 12 , further comprising receiving the liquid rich stream from the compact gas/liquid splitter or an oil stream from the FWKO/holding tank via a transfer pump with an oil burner coupled to the compact gas/liquid splitter and the FWKO/holding tank. 
     
     
         14 . The method of  claim 13 , further comprising venting gas that is degassed from the liquid rich stream with a gas vent of the FWKO/holding tank. 
     
     
         15 . The method of  claim 14 , further comprising sending fluids from the liquid rich stream to a rig tank or pit with an output of the FWKO/holding tank. 
     
     
         16 . The method of  claim 13 , further comprising enhancing the purity of the water separated from the liquid rich stream with an electro-coalescer of the FWKO/holding tank. 
     
     
         17 . The method of  claim 16 , further comprising optimizing the oil/water separation on the liquid rich stream with an auto-adjustable floating smart weir of the FWKO/holding tank. 
     
     
         18 . The method of  claim 15 , further comprising beginning of a clean up phase of a well, including directly sending effluent to a holding compartment of the FWKO/holding tank for degassing purposes or flowing effluent through to the compact gas/liquid splitter to handle gas pockets. 
     
     
         19 . The method of  claim 15 , further comprising performing clean up of a well in development, including pre-separating effluent through the compact gas/liquid splitter, sending the liquid rich stream to an oil/water separation compartment of the FWKO/holding tank for degassing and oil/water separation, extracting water from a bottom of the FWKO/holding tank for disposal, pumping separated oil for burning with the oil burner, and sending the gas rich stream to the wet gas flare. 
     
     
         20 . The method of  claim 15 , further comprising stabilizing flow of a well, wherein the liquid rich stream includes less than 25% of water, including directly burning the resulting liquid through the oil burner, and sending the gas rich stream to the wet gas flare.