Might need to look into legality if you are planning to drill under someone else's land. Attached is a publication that might be helpful.
https://www.researchgate.net/profile/Ver...ublication_list"Abstract
Horizontal well technology, long used in the livestock and construction industries, recently has been applied to the management of wildlife habitat. Horizontal wells are an effective method of developing water supplies in arid regions where more traditional methods may not be adequate. The advantages of this technique are discussed, and brief descriptions of the development processes are provided. Widespread application of this technique is encouraged, particularly at sites that historically produced water but, because of the general drying trend throughout the Southwest, no longer generate surface flows."
http://www.clean-water-for-laymen.com/spring-development.html"Horizontal Wells
Where a spring has a steeply sloping water table (steep hydraulic gradient), horizontal wells may be used for spring development. Horizontal well intakes must be located in an area with a sloping water table in order to have adequate discharge.
Pipes with open ends or with perforated drive points or well screens can be driven, jetted, or augured into an aquifer horizontally or at a shallow slope to tap it at a point higher than the natural discharge.
The pipe must also enter the aquifer deeply enough to ensure the required minimum flow throughout the year. The water supply reaches the surface by flowing from the tapped aquifer through the installed pipe. See Figure 4 for an example of intake placement for horizontal wells.
Horizontal wells are installed in a manner similar to driven and jetted wells except that care must be taken to prevent water from flowing through the annular space outside the pipe. Any flow can be stopped by grouting or by constructing a concrete cut-off wall packed with clay backfill.
The advantages and disadvantages of spring development of this type are similar to those of the spring box mentioned above. Horizontal wells are fairly inexpensive, spring water is relatively clean, and gravity flow may be acceptable. Springs with flat water tables are not suitable for the use of horizontal wells, and the quantity of water may fluctuate with the season."
