Horizontal well production method with uniform flow

Abstract

The invention addresses to a flow uniformization process for the entire useful life of a horizontal well, which associates the use of divergent sand containment screens or divergent liner. For the manufacture of divergent liners, flow simulations are carried out via computational fluid dynamics as a function of the dimensions of the horizontal well, outer diameter and length of the liner, static pressure, expected flow pressure, expected oil flow rate, oil viscosity, API degree, planned length for the horizontal well. These simulations simulate the area open to flow along the horizontal section. Additionally, well stimulation methods, scale removers and, optionally, sand containment are used.

1 . A HORIZONTAL WELL PRODUCTION METHOD WITH UNIFORM FLOW, characterized in that there is:
 a) designing the production string as a function of the length and diameter of the horizontal well;   b) sizing the perforation distribution of the horizontal well production string according to the production string design;   c) optimizing the perforation distribution in the production string with a computational fluid dynamics (CFD) simulator;   d) using holes of uniform dimensions;   e) installing the production string of the horizontal open well permanently;   f) using a stimulation method;   g) using scale removers.   
     
     
         2 . THE HORIZONTAL WELL PRODUCTION METHOD WITH UNIFORM FLOW according to  claim 1 , characterized in that the computational fluid dynamics simulator uses the horizontal well design flow rate, the gas/oil ratio, reservoir pressure, flow pressure (PWF), viscosity and API grade. 
     
     
         3 . THE HORIZONTAL WELL PRODUCTION METHOD WITH UNIFORM FLOW according to  claim 1 , characterized in that all holes have the same diameter. 
     
     
         4 . THE HORIZONTAL WELL PRODUCTION METHOD WITH UNIFORM FLOW according to  claim 3 , characterized in that the hole diameter has a value of 1 to 3 cm. 
     
     
         5 . THE HORIZONTAL WELL PRODUCTION METHOD WITH UNIFORM FLOW according to  claim 1 , characterized in that the spacing and number of holes along the production string of the horizontal well are determined by computational fluid dynamics simulation. 
     
     
         6 . THE HORIZONTAL WELL PRODUCTION METHOD WITH UNIFORM FLOW according to  claim 1 , characterized in that it is applied in sandstone, carbonate and clastic sedimentary rock type reservoirs. 
     
     
         7 . THE HORIZONTAL WELL PRODUCTION METHOD WITH UNIFORM FLOW according to  claim 1 , characterized in that it uses the following stimulation methods: hydraulic fracturing, acidification and solvent injection. 
     
     
         8 . THE HORIZONTAL WELL PRODUCTION METHOD WITH UNIFORM FLOW according  1 , characterized in that it uses DTPA (ethylenetriaminepentaacetic acid) or EDTA (ethylenediaminetetraacetic acid) as scale removers. 
     
     
         9 . THE HORIZONTAL WELL PRODUCTION METHOD WITH UNIFORM FLOW according to  claim 1 , characterized in that it optionally employs sand containment.