Radial Drilling Services Technology

  • Technology
  • Applications
  • Benefits
  • Results
  • Components

 


The premature shut-In of wells and marginal fields is an increasing problem in the oil and gas production sector. Once a field has been shut-in, in most cases the remaining resources will be abandoned due to the increasingly high cost of re-establishing production of the field. See Radial Drilling


Well stimulation and rehabilitation is a major expense in many well completions and workovers.
 
RDS - with its radial drilling technology - addresses problems of marginal fields and challenges established oil & gas service companies and their well stimulation techniques.


Radial Drilling Services, Inc. offers specialized tools and procedures for differing reservoir situations. The HOSS™ (Heavy Oil Steam System) system offered by RDS is a breakthrough in producing heavy oil reserves using steam drive. The RDS technology allows recovery of more of the oil in place due to the greater reservoir exposure offered by its multiple lateral grid. See Hoss™


RDS offers the SureFrac system to direct the hydraulic fracture treatment precisely where the operator demands. The RDS laterals are gyro oriented to align most beneficially to the natural stress planes, taking the guess work out of "where the frac actually goes". This is a major step in giving control of the stimulation treatment back to the operator, where it belongs. See Huff and Puff

 

To view flash animations of the Radial Drilling processes, choose one of the following images below.

Radial Drilling

HOSS

Huff N Puff

 


Applications of Radial Drilling Technology


The main application is to provide a fast and economically method to recover the remaining hydrocarbons form marginal or mature oil and gas fields.

Other Applications:

• Well completions


• Well stimulations


• Directed reservoir treatment


• Improve water injection


• Improve vertical cleaning


• Reduce water coning


• New wells instead of standard completion methods


• Water disposal and re-injection


• Steam applications in heavy oil and tar sands


• Mining applications (leaching)


Economic Benefits

 

• Application of radial drilling technology will enhance production rates of oil and gas wells/fields and increase their recoverable reserves.


• It outperforms conventional stimulation methods at a lower cost, in reduced application time and with higher potential production results.
 
• Therefore, applying the technology to your wells will result in improved profitability and greater return on stimulation investment.
 

 

Technical Benefits


• Improved and extended drainage area in productive formations.


• Reach beyond the damaged area of the well-bore.


• Applicable in both high-productivity conventional reservoirs and low-permeability heterogeneous, layered reservoirs.
 

Small equipment and therefore:


• No need for large rotary rigs.


• Does not require mud pits (environmentally sensitive).


• No casing milling requirement, therefore no need to circulate drilling fluid back to the surface.


• Additional directed well stimulation optional through laterals.


• No logging expenses.
 
Radial Drilling penetration greatly exceeds conventional (perforation) penetration and can reach substantially beyond the damaged area of the well-bore.

 

• Radial drilling creates a round-shaped hole by blasting the formation to powder with high fluid pressure.

 

• Hole size depends on formation strength, confining strengths and compressive loads from overburden and matrix stress, as well as on the speed of penetration of the jet From surface tests an average hole size of 4-5cm in diameter was obtained.
 

Bore hole stability is maintained as follows:

 

The confining stresses. Ov/Hv and Bv are all acting on the ARD of the lateral thereby preventing collapse as those stresses increase by depth.
 
Exception to this rule is any chemical/ hydration actions as a result of fluid contamination. These chemical forces can unbalance the balanced status of the formation (shale hydration).
 
Through application of Radial Drilling Technology drainage area in productive formations will be extended and optimized.


Results

 

The well response after radial drilling is a function of well selection and remaining recoverable reserves as well as acceptable reservoir parameters.


RDS technology is used in terrigenous and carbonate reservoirs.


RDS has completed more than 200 wells throughout the world. The graph below depicts their incremental oil production results:


Components

 

 

Based on a portable skid unit, 7.2' by 19'(2.3m by 5.8m).


• Lockable storage cabin with hand tools repair kits and spare parts for 5well operations.

• Control Cabin complete with instrumentation, air conditioner/heather.


• Coil tubing reel with up to 12000 ft. of _” (12.65mm) seamless stainless steel continuous tubing and control head, spooling automat, pressure connections and depth counter.

• Weight indicator

• Hoses and high pressure chicksan connectors from reel to pumps rated at 15000 psi(l 035 atm)

• 2 Rex Roth 24hp hydraulic pumps for the hydraulic fluid circulation and control of the reel mechanism

• Air driven pump, Ingersol-Rand type for fluid transfer between tanks with a capacity of 30 GPM.(126 1/min)

• Kerr/Mustang main pump, triplex type with 10000 psi (685 atm) working pressure, and 15000 psi (1000+atm.) test pressure for the radial drilling system

• Main power unit, 140hp@2700 rpm Deutz Diesel engine, vibration free mounted on the skid

• 1500 psi (100 atm) Honda air compressor

• Water filter system with 4-5 micron bag filter unit

• Lubricator and stand, guilberson type including oil saver and pressure seals

• Coil tubing injector guide head and well adaptor with tripod

• Water holding tank, skid mounted with 30 gallon (1250 liter) capacity for drilling and mixing

• Stand-By Electric generator pack, 110/220 volt, 10,000 watt