BUZZ-Lamprell: Set for best day in over 2 yrs on JV deal with Saudi Aramco
** Oil-rig builder's shares up 13.6 pct to 114.75p, after signing JV agreement with Saudi Aramco
** Stock on track for biggest single day gain since March 19, 2015
** Saudi Aramco signs JV deal with UK's Lamprell (Frankfurt: L51.F - news) , Saudi's Bahri, a UAE-based engineering firm and South Korea's Hyundai Heavy Industries to build shipyard on Saudi Arabia's east coast for expected cost of $5.2 bln
** Stock top gainer on FTSE All Share index, FTSE small cap index
** About 75 pct of its 30-day avg trading volume through in less than an hour of trade on Wednesday (Reuters messaging:; justin.varghese.thomsonreuters.com@reuters.net)