Increasing oil stockpiles will probably drag down prices. This will hurt demand for drilling and production equipment as explorers and producers will be reluctant to produce more of the commodity, creating a challenging outlook for the Zacks Oil and Gas- Mechanical and Equipment industry.Companies striving to navigate these industry challenges include Natural Gas Services Group, Inc. (NGS) , Solaris Energy Infrastructure, Inc. ((SEI Quick Quote - Free Report) ) and Oil States International, Inc. (OIS Quick ...