A practicum report on shallow tubewell drilling, design, installation, and development in Cabuyao, Laguna

Date

4-2011

Degree

Bachelor of Science in Agricultural Engineering

Major Course

Major in Land & Water Resources Engineering

College

College of Engineering and Agro-Industrial Technology (CEAT)

Adviser/Committee Chair

Aurelio A. Delos Reyes, Jr.

Committee Member

Roger A. Luyun, Jr., Arthur L. Fajardo

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Abstract

The field practice was conducted under the project led by Dr. Wilfredo P. David, entitled: A Pilot On-Farm Strategy Demonstration in Cabuyao (APOSDC). The project consisted of field works on STW drilling, design, installation and development in the 5 barangays of Cabuyao. Four of these sites were participated in by the student, namely: Gulod, Marinig, Sala, and Mamatid.The field practice was conducted so that the student could gain knowledge on the drilling rigs and accessories used, procedural techniques on and troubleshooting in the actual shallow tubewell (STW) drilling, design, installation and development. The project used the DA-UPLB Drilling Rig Model II as its drilling equipment. It was used in the well logging, drilling, and installation procedures of STWs by which the student provided assistance. The student also assisted in the STWs well development, which was performed up to the pumping of intermediate discharges, leaving the pumping at high discharges to the farmers. A well point system was done to the two newly constructed wells in the Gulod site since the well discharge of the first well was insufficient at about 4 lps only. Before being left to the farmers, each well in the site delivered a discharge of about 6 lps. Likewise, a well point system was made in the Marinig site in such a way that the newly constructed well was connected to the rehabilitated well in the site. As a result, the each well from the Marinig site delivered a discharge of about 8 lps from 4 lps after the rehabilitation of the old well. The Sala and Mamatid sites, on the other hand, obtained discharges of about 15 lps and 12 lps from their respective wells. The student gained experience on the proper drilling, design, installation, and development of STW. The Gulod site provided most of the procedural and troubleshooting techniques which were later analyzed and applied in the succeeding sites of Marinig, Sala, and Mamatid. These techniques included but was not limited to the following: using the termite mounds in the area as lattice clays to be mixed in the drilling mud, collection of water using the centrifugal pump, substituting mesh #30 and #100 to mesh #40 and #200, partial aquifer penetration, incorporation of pipe perforations, gravel packing, well casing, pumping, jetting constructing a well point system, and rehabilitating an old well.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Document Type

Thesis

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