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STANDARDIZING BOREHOLE DRILLING ACTIVITIES IN NIGERIA

STANDARDIZING BOREHOLE DRILLING ACTIVITIES IN NIGERIA

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STANDARDIZING BOREHOLE DRILLING ACTIVITIES IN NIGERIA. EVOLUTION OF BOREHOLE DRILLING ACTIVITIES. Availability of water still far below demand Majority of big water schemes are surface water or ground water based - PowerPoint PPT Presentation

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Page 1: STANDARDIZING  BOREHOLE DRILLING ACTIVITIES IN NIGERIA

STANDARDIZING BOREHOLE DRILLING

ACTIVITIES IN NIGERIA

Page 2: STANDARDIZING  BOREHOLE DRILLING ACTIVITIES IN NIGERIA

EVOLUTION OF BOREHOLE DRILLING ACTIVITIESAvailability of water still far below demandMajority of big water schemes are surface water or ground water

basedDecreasing funding, increased capital outlay for new schemes,

inadequate funding of routine maintenance, spare parts flight and sparse turn around maintenance of existing schemes necessitated dependence on boreholes

Proliferation of borehole is the quick emergency solutionGroundwater development and borehole drilling is thus demand

driven.Little development activities by Government, associations or

individuals to control, regulate or legislate the sectorBorehole drilling is proliferated by all comers who own rig, has

access to a rig and with little knowledge of geology and drilling technology.

Page 3: STANDARDIZING  BOREHOLE DRILLING ACTIVITIES IN NIGERIA

Borehole Drilling Activities – The Present.New innovations and methods to reduce cost and construction time

coming up to the front burner.Rig/compressor in basement while rig/auger in transition/sedimentary

formation with rotary drilling as most prevalent methodNo Institution, Association or Government organ actively coordinating

and controlling hence practitioners are many and drilling indiscriminately/

Geophysical surveys, casing and plumbing materials, submersible pumps and cabling, finished borehole quality are not being monitored

Despite the above, demand for boreholes is still tremendous and available drillers cannot meet demand. No consideration for registration and references , thus Quacks are thriving.

Unproductive or failed boreholes ,poor quality service, unprofessional conducts, poor workmanship, poor material use abound.

Page 4: STANDARDIZING  BOREHOLE DRILLING ACTIVITIES IN NIGERIA

MAJOR TYPES OF BOREHOLES DRILLED IN NIGERIATwo categories Domestic – drill depth not more than 100m and casing size 4-8ins Industrial – drill depth more than 100m and minimum casing size

is 10insBoreholes are typed according to 3 geological formations –

Sedimentary formation, Transition zone and Basement formation.Primary drilling techniques employed are rotary air percussion,

cable tool percussion, mud rotary drilling, jetting and manual drilling

Prevalent three water well designs-Type 1 – complete lining and plug at the bottomType 2 – Filter packed water well in unconsolidated formationType 3 – Telescopic water well design

Page 5: STANDARDIZING  BOREHOLE DRILLING ACTIVITIES IN NIGERIA

EIGHT (8) CORNERSTONE STANDARDSGeophysical survey standardStandards for borehole Cost/Sub soil material and DepthBorehole casing standardBorehole pumps/riser pipes/cable StandardBorehole Drilling Agreement StandardCompleted Borehole StandardEquipment Financing StandardManpower and Human Resources Standard

Page 6: STANDARDIZING  BOREHOLE DRILLING ACTIVITIES IN NIGERIA

REMARKS AND CONCLUSSION Actors in the industry discussing and deliberating to bring credibility

to the sector is laudable. Immediate concerns arising from experience garnered on the field

should be articulated and collated. Practitioners contributions should form building blocks for the

formulation of standards that will be embellished with existing codes and theoretical principles.

Development of Nigeria’s groundwater resources is at infancy hence its exploration and exploitation is exploitative without due regard to protection and replenishment. Therefore, quacks must be eliminated to protect the resources.

Standardization will control and ensure proper completion of boreholes.

AWDROP should champion this standardization cause by developing her own standards which will be adopted by all members

Page 7: STANDARDIZING  BOREHOLE DRILLING ACTIVITIES IN NIGERIA

THANK YOU FOR

YOUR ATTENTION.